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<front>
<journal-meta>
<journal-id journal-id-type="publisher-id">Front. Med.</journal-id>
<journal-title-group>
<journal-title>Frontiers in Medicine</journal-title>
<abbrev-journal-title abbrev-type="pubmed">Front. Med.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">2296-858X</issn>
<publisher>
<publisher-name>Frontiers Media S.A.</publisher-name>
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<article-meta>
<article-id pub-id-type="doi">10.3389/fmed.2026.1731912</article-id>
<article-version article-version-type="Version of Record" vocab="NISO-RP-8-2008"/>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Case Report</subject>
</subj-group>
</article-categories>
<title-group>
<article-title>Case Report: Percutaneous portal-central venous bypass: a novel salvage therapy for refractory variceal bleeding in TIPS-ineligible patients with portal vein tumor thrombus</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author" equal-contrib="yes">
<name>
<surname>Deng</surname>
<given-names>Guoyu</given-names>
</name>
<xref ref-type="aff" rid="aff1"><sup>1</sup></xref>
<xref ref-type="author-notes" rid="fn0001"><sup>&#x2020;</sup></xref>
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<xref ref-type="aff" rid="aff2"><sup>2</sup></xref>
<xref ref-type="author-notes" rid="fn0001"><sup>&#x2020;</sup></xref>
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<surname>He</surname>
<given-names>Meiling</given-names>
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<contrib contrib-type="author">
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<surname>Zhou</surname>
<given-names>Chaonan</given-names>
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<xref ref-type="aff" rid="aff2"><sup>2</sup></xref>
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<contrib contrib-type="author" corresp="yes">
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<surname>Chen</surname>
<given-names>Xiaoju</given-names>
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<xref ref-type="aff" rid="aff2"><sup>2</sup></xref>
<xref rid="aff4" ref-type="aff"><sup>4</sup></xref>
<xref ref-type="corresp" rid="c001"><sup>&#x002A;</sup></xref>
<uri xlink:href="https://loop.frontiersin.org/people/3248558"/>
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<aff id="aff1"><label>1</label><institution>Department of Interventional Radiology, Guangxi Medical University Cancer Hospital</institution>, <city>Nanning</city>, <state>Guangxi</state>, <country country="cn">China</country></aff>
<aff id="aff2"><label>2</label><institution>Department of Internal Medicine, Guangxi Medical University Cancer Hospital</institution>, <city>Nanning</city>, <state>Guangxi</state>, <country country="cn">China</country></aff>
<aff id="aff3"><label>3</label><institution>Department of Day Oncology Unit, Guangxi Medical University Cancer Hospital</institution>, <city>Nanning</city>, <state>Guangxi</state>, <country country="cn">China</country></aff>
<aff id="aff4"><label>4</label><institution>Guangxi Key Laboratory of Extremely Weak Magnetic Field in Cancer Medicine, Guangxi Medical University Cancer Hospital</institution>, <city>Nanning</city>, <state>Guangxi</state>, <country country="cn">China</country></aff>
<author-notes>
<corresp id="c001"><label>&#x002A;</label>Correspondence: Xiaoju Chen, <email xlink:href="mailto:chenxiaoju984@163.com">chenxiaoju984@163.com</email></corresp>
<fn fn-type="equal" id="fn0001">
<label>&#x2020;</label>
<p>These authors have contributed equally to this work</p>
</fn>
</author-notes>
<pub-date publication-format="electronic" date-type="pub" iso-8601-date="2026-02-02">
<day>02</day>
<month>02</month>
<year>2026</year>
</pub-date>
<pub-date publication-format="electronic" date-type="collection">
<year>2026</year>
</pub-date>
<volume>13</volume>
<elocation-id>1731912</elocation-id>
<history>
<date date-type="received">
<day>24</day>
<month>10</month>
<year>2025</year>
</date>
<date date-type="rev-recd">
<day>07</day>
<month>01</month>
<year>2026</year>
</date>
<date date-type="accepted">
<day>08</day>
<month>01</month>
<year>2026</year>
</date>
</history>
<permissions>
<copyright-statement>Copyright &#x00A9; 2026 Deng, Tang, He, Zhou and Chen.</copyright-statement>
<copyright-year>2026</copyright-year>
<copyright-holder>Deng, Tang, He, Zhou and Chen</copyright-holder>
<license>
<ali:license_ref start_date="2026-02-02">https://creativecommons.org/licenses/by/4.0/</ali:license_ref>
<license-p>This is an open-access article distributed under the terms of the <ext-link ext-link-type="uri" xlink:href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution License (CC BY)</ext-link>. The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.</license-p>
</license>
</permissions>
<abstract>
<sec>
<title>Background</title>
<p>Acute esophagogastric variceal bleeding (EGVB) is a lethal complication in patients with hepatocellular carcinoma (HCC) complicated by portal vein tumor thrombus (PVTT). While transjugular intrahepatic portosystemic shunt (TIPS) is a standard treatment for portal hypertension, it is often contraindicated or technically challenging in patients with extensive main portal vein occlusion (Vp4 type) or severe hepatic dysfunction.</p>
</sec>
<sec>
<title>Case summary</title>
<p>We report the first clinical application of a novel salvage technique, percutaneous portal-central venous bypass (PPCV), in a 56-year-old man with HCC, decompensated cirrhosis, and extensive PVTT. The patient presented with life-threatening EGVB refractory to endoscopic therapy and was deemed ineligible for TIPS due to the extent of the tumor thrombus and critical instability. PPCV was performed by percutaneously puncturing the portal vein under ultrasound guidance and establishing an extracorporeal shunt connected to a pre-existing subclavian central venous catheter.</p>
</sec>
<sec>
<title>Results</title>
<p>The procedure was technically successful and achieved immediate hemodynamic improvement. Direct portal venous pressure decreased significantly from 40.6&#x202F;mmHg pre-connection to 18.8&#x202F;mmHg post-connection. Clinical hemostasis was achieved within 24&#x202F;h, and the patient remained stable for 2&#x202F;weeks until discharge. Although the patient succumbed to tumor progression 2&#x202F;months later, no recurrent bleeding or procedure-related complications were observed.</p>
</sec>
<sec>
<title>Conclusion</title>
<p>PPCV is a simple, feasible, and effective salvage therapy for rapidly reducing portal pressure and controlling refractory bleeding. It provides a vital therapeutic option for high-risk HCC patients with PVTT who are contraindicated for TIPS.</p>
</sec>
</abstract>
<kwd-group>
<kwd>acute variceal bleeding</kwd>
<kwd>hepatocellular carcinoma</kwd>
<kwd>percutaneous portal-central venous bypass (PPCV)</kwd>
<kwd>portal vein tumor thrombus</kwd>
<kwd>salvage therapy</kwd>
</kwd-group>
<funding-group>
<award-group id="gs1">
<funding-source id="sp1">
<institution-wrap>
<institution>Guangxi Medical and Health Appropriate Technology Development and Promotion Project</institution>
</institution-wrap>
</funding-source>
<award-id rid="sp1">S2022115</award-id>
</award-group>
<award-group id="gs2">
<funding-source id="sp2">
<institution-wrap>
<institution>Self-raised Funds Scientific Research Project of the Health Commission of Guangxi Zhuang Autonomous Region</institution>
</institution-wrap>
</funding-source>
<award-id rid="sp2">Z20190664</award-id>
</award-group>
<funding-statement>The author(s) declared that financial support was received for this work and/or its publication. This study was supported by the Self-raised Funds Scientific Research Project of the Health Commission of Guangxi Zhuang Autonomous Region (Contract No. Z20190664) and the Guangxi Medical and Health Appropriate Technology Development and Promotion Project (Contract No. S2022115).</funding-statement>
</funding-group>
<counts>
<fig-count count="2"/>
<table-count count="1"/>
<equation-count count="0"/>
<ref-count count="29"/>
<page-count count="6"/>
<word-count count="4358"/>
</counts>
<custom-meta-group>
<custom-meta>
<meta-name>section-at-acceptance</meta-name>
<meta-value>Hepatobiliary Diseases</meta-value>
</custom-meta>
</custom-meta-group>
</article-meta>
</front>
<body>
<sec sec-type="intro" id="sec1">
<title>Introduction</title>
<p>Hepatocellular carcinoma (HCC) is one of the most common malignancies worldwide and a leading cause of cancer-related mortality (<xref ref-type="bibr" rid="ref1 ref2 ref3 ref4">1&#x2013;4</xref>). It is frequently associated with liver cirrhosis and portal hypertension (PH). Notably, at the time of diagnosis, approximately 10&#x2013;40% of patients already present with portal vein tumor thrombus (PVTT) (<xref ref-type="bibr" rid="ref5">5</xref>, <xref ref-type="bibr" rid="ref6">6</xref>). PVTT not only obstructs portal venous flow, exacerbating portal hypertension, but is also significantly associated with a poor prognosis. It leads to complications of symptomatic portal hypertension (SPH), such as variceal bleeding, refractory ascites or hydrothorax, portal hypertensive enteropathy (PHE), and diarrhea (<xref ref-type="bibr" rid="ref7 ref8 ref9">7&#x2013;9</xref>).</p>
<p>In China, approximately 30&#x2013;40% of HCC patients present with concurrent PVTT (<xref ref-type="bibr" rid="ref10">10</xref>). The presence of PVTT further aggravates portal hypertension and deteriorates liver function, significantly increasing the risk of acute esophagogastric variceal bleeding (EGVB). EGVB remains a direct cause of death in many HCC patients, particularly those with decompensated cirrhosis (<xref ref-type="bibr" rid="ref11">11</xref>). For HCC patients with PVTT, the median overall survival (OS) with conservative treatment is merely 2.7&#x202F;months (<xref ref-type="bibr" rid="ref12">12</xref>, <xref ref-type="bibr" rid="ref13">13</xref>).</p>
<p>In recent years, with the advent of targeted therapy and immunotherapy, the prognosis for patients with Barcelona Clinic Liver Cancer (BCLC) stage C HCC has significantly improved, with the median OS increasing from 2.7&#x202F;months to 19.2&#x202F;months (<xref ref-type="bibr" rid="ref12">12</xref>, <xref ref-type="bibr" rid="ref14">14</xref>). However, notably, the incidence of EGVB has concurrently risen (<xref ref-type="bibr" rid="ref15">15</xref>). Endoscopic therapy combined with vasoactive drugs is the mainstay of treatment for acute EGVB (<xref ref-type="bibr" rid="ref16">16</xref>). Nevertheless, endoscopic treatment fails in 10&#x2013;20% of cases, and the risk of rebleeding within 48&#x2013;72&#x202F;h remains high (<xref ref-type="bibr" rid="ref17">17</xref>). When endoscopic intervention fails, non-endoscopic salvage measures, such as hemostatic drugs and shunt procedures, must be considered (<xref ref-type="bibr" rid="ref16">16</xref>).</p>
<p>In this context, the transjugular intrahepatic portosystemic shunt (TIPS) has gained prominence as an effective method for managing PH complications (<xref ref-type="bibr" rid="ref18">18</xref>, <xref ref-type="bibr" rid="ref19">19</xref>). However, the safety and efficacy of TIPS in treating SPH and EGVB induced by HCC with PVTT&#x2014;especially involving the main portal vein (Vp4-type)&#x2014;remain controversial, and the procedure is often considered contraindicated (<xref ref-type="bibr" rid="ref20">20</xref>).</p>
<p>To address such complex clinical scenarios, we developed a simplified and feasible novel technique: percutaneous portal-central venous bypass (PPCV). This procedure involves ultrasound-guided percutaneous puncture of the portal vein, followed by the creation of an extracorporeal portosystemic shunt via a central venous catheter, aimed at rapidly reducing portal pressure and achieving hemostasis. In this study, we report a case of refractory EGVB successfully managed with PPCV. The patient was critically ill following failed endoscopic hemostasis and was ineligible for TIPS due to progressive liver failure and extensive main portal vein tumor thrombosis. Although the underlying malignancy ultimately claimed his life 2&#x202F;months later, this innovative intervention offers a potential solution for similar high-risk patients. This case report adheres to the CAse REport guidelines.</p>
</sec>
<sec id="sec2">
<title>Case presentation</title>
<sec id="sec3">
<title>History and admission</title>
<p>A 56-year-old man was admitted to our hospital on 28 October 2024 with complaints of fatigue and anorexia persisting for over 10&#x202F;days, which developed following targeted immunotherapy for HCC. The patient&#x2019;s medical history was significant for HCC (CNLC Stage IIIa) diagnosed in September 2024, for which he had received hepatic arterial infusion chemotherapy (HAIC) and targeted immunotherapy. He had developed melena on 17 October 2024, which reportedly resolved after local hemostatic therapy. He also had a history of chronic hepatitis B virus infection, managed with tenofovir.</p>
<p>On admission, vital signs were stable. Physical examination revealed mild scleral icterus and abdominal distension with shifting dullness. Laboratory assessments performed on 29 October 2024 revealed significant cytopenia and hepatic dysfunction: white blood cells (WBCs) were 9.74&#x202F;&#x00D7;&#x202F;10<sup>9</sup>/L, hemoglobin (Hb) was 99&#x202F;g/L, and platelets (PLTs) were 136.00&#x202F;&#x00D7;&#x202F;10<sup>9</sup>/L. Liver function tests indicated impaired synthesis and cholestasis with total bilirubin (TB) of 47.4&#x202F;&#x03BC;mol/L, albumin (ALB) of 31.7&#x202F;g/L, alanine aminotransferase (ALT) of 57&#x202F;U/L, and aspartate transaminase (AST) of 104&#x202F;U/L. Coagulation profiles showed a prothrombin time (PT) of 10.8&#x202F;s and an activated partial thromboplastin time (APTT) of 39.8&#x202F;s. Additionally, tumor markers were markedly elevated, with alpha-fetoprotein (AFP) being negative but abnormal prothrombin (PIVKA-II) of 10148.00&#x202F;ng/mL, CA125 of 607.3&#x202F;U/mL, and CA19-9 of 45.9&#x202F;U/mL. The patient also tested positive for hepatitis B surface antigen (2720.81&#x202F;IU/mL) with a blood ammonia level of 20&#x202F;&#x03BC;mol/L. The diagnostic workup included magnetic resonance imaging (MRI), which confirmed multiple hepatic lesions, extensive PVTT, cirrhosis, and esophagogastric varices. An enhanced computed tomography (CT) scan further detailed the PVTT extending into the hepatic veins. An upper endoscopy performed on 30 October 2024 revealed severe esophagogastric varices, which were treated with endoscopic ligation and sclerotherapy (<xref ref-type="fig" rid="fig1">Figure 1</xref>).</p>
<fig position="float" id="fig1">
<label>Figure 1</label>
<caption>
<p>Preoperative imaging and endoscopic findings. <bold>(A)</bold> Axial CT showing tumor thrombus in intrahepatic portal branches (arrows). <bold>(B)</bold> Coronal CT demonstrating complete occlusion of the main portal vein (arrow). <bold>(C)</bold> MRI confirming HCC with extensive portal vein tumor thrombus (PVTT). <bold>(D)</bold> Endoscopy revealing severe esophagogastric varices.</p>
</caption>
<graphic xlink:href="fmed-13-1731912-g001.tif" mimetype="image" mime-subtype="tiff">
<alt-text content-type="machine-generated">Image A shows an axial CT scan of the abdomen with a large mass in the liver. Image B is a coronal CT scan displaying abdominal organs, showing the liver and surrounding structures. Image C is an MRI with a focus on a liver mass. Image D is an endoscopic view of the esophagus with visible mucosal folds.</alt-text>
</graphic>
</fig>
<p>Based on these findings, the patient was diagnosed with: (1) decompensated cirrhosis with esophagogastric variceal hemorrhage, (2) hepatocellular carcinoma (CNLC Stage IIIa) with main portal vein tumor thrombus, and (3) chronic hepatitis B virus infection.</p>
</sec>
<sec id="sec4">
<title>Rescue procedure and clinical course</title>
<p>Following admission, the patient developed hypovolemia and shock due to recurrent bleeding from the esophagogastric varices. To facilitate urgent fluid resuscitation and blood transfusion, a central venous catheter (SCW-CVCP-1, 16G&#x202F;&#x00D7;&#x202F;20&#x202F;cm, 1 Lumen, Shenzhen, China) had been routinely placed in the right subclavian vein in the intensive care unit (ICU) (<xref ref-type="fig" rid="fig2">Figure 2</xref>, yellow dashed arrow) (see <xref ref-type="table" rid="tab1">Table 1</xref>).</p>
<fig position="float" id="fig2">
<label>Figure 2</label>
<caption>
<p>Percutaneous portal-central venous bypass (PPCV) procedure. <bold>(A)</bold> External setup: The portal catheter (green arrow) is connected to the central venous catheter (yellow arrow) via a connecting tube (blue arrow). <bold>(B)</bold> DSA image: The portal catheter tip is positioned in the superior mesenteric vein (green arrow). <bold>(C)</bold> Schematic: Illustration of the portal-to-systemic shunt mechanism (red arrows) reducing portal pressure.</p>
</caption>
<graphic xlink:href="fmed-13-1731912-g002.tif" mimetype="image" mime-subtype="tiff">
<alt-text content-type="machine-generated">Illustration consisting of three panels. Panel A shows a medical procedure on a patient's torso with a central venous catheter. Panel B is an imaging scan highlighting blood vessels and catheter placement. Panel C is a diagram labeling the subclavian vein, superior vena cava, portal vein catheter, portal venous, inferior vena cava, and other anatomical features, demonstrating the percutaneous portal-central venous bypass system.</alt-text>
</graphic>
</fig>
<table-wrap position="float" id="tab1">
<label>Table 1</label>
<caption>
<p>Timeline of diagnosis and treatment.</p>
</caption>
<table frame="hsides" rules="groups">
<thead>
<tr>
<th align="left" valign="top">Date</th>
<th align="center" valign="top">Clinical event</th>
<th align="center" valign="top">Management and outcome</th>
</tr>
</thead>
<tbody>
<tr>
<td align="left" valign="middle">5 September 2024</td>
<td align="left" valign="middle">Initial diagnosis</td>
<td align="left" valign="middle">Diagnosed with HCC (CNLC Stage IIIa) with extensive PVTT and chronic HBV infection. Initiated HAIC combined with targeted immunotherapy</td>
</tr>
<tr>
<td align="left" valign="middle">17 October 2024</td>
<td align="left" valign="middle">First bleeding episode</td>
<td align="left" valign="middle">Developed melena, treated with hemostatic agents and gastric protection. Symptoms temporarily resolved</td>
</tr>
<tr>
<td align="left" valign="middle">28 October 2024</td>
<td align="left" valign="middle">Hospital admission</td>
<td align="left" valign="middle">Admitted for decompensated cirrhosis and severe esophagogastric varices</td>
</tr>
<tr>
<td align="left" valign="middle">30 October 2024</td>
<td align="left" valign="middle">Endoscopic intervention</td>
<td align="left" valign="middle">Upper endoscopy confirmed severe varices. Performed endoscopic ligation and sclerotherapy (<xref ref-type="fig" rid="fig1">Figure 1</xref>)</td>
</tr>
<tr>
<td align="left" valign="middle">18 November 2024</td>
<td align="left" valign="middle">Life-threatening hemorrhage</td>
<td align="left" valign="middle">Recurrent massive hematemesis and melena leading to hypovolemic shock. Transferred to ICU. Fluid resuscitation and blood transfusion via a central venous catheter</td>
</tr>
<tr>
<td align="left" valign="middle">21 November 2024</td>
<td align="left" valign="middle">PPCV procedure (Day 0)</td>
<td align="left" valign="middle">Salvage therapy: MDT confirmed TIPS ineligibility. Performed percutaneous portal-central venous bypass (PPCV)<break/>Outcome: Portal pressure dropped from 40.6&#x202F;mmHg to 18.8&#x202F;mmHg immediately</td>
</tr>
<tr>
<td align="left" valign="middle">22 November 2024</td>
<td align="left" valign="middle">Post-PPCV (Day 1)</td>
<td align="left" valign="middle">Hemostasis achieved: No active bleeding from the gastric tube; melena ceased. Continuous heparin infusion initiated to maintain catheter patency</td>
</tr>
<tr>
<td align="left" valign="middle">24 November 2024</td>
<td align="left" valign="middle">Post-PPCV (Day 3)</td>
<td align="left" valign="middle">Diet resumption: Patient resumed a liquid diet with no recurrence of bleeding</td>
</tr>
<tr>
<td align="left" valign="middle">28 November 2024</td>
<td align="left" valign="middle">Post-PPCV (Day 7)</td>
<td align="left" valign="middle">Ward transfer: Hemodynamics stable. Transferred from the ICU to the general internal medicine ward</td>
</tr>
<tr>
<td align="left" valign="middle">5 December 2024</td>
<td align="left" valign="middle">Post-PPCV (Day 14)</td>
<td align="left" valign="middle">Discharge: Condition stabilized with no complications (e.g., normal blood ammonia). PPCV catheters removed. Discharged home</td>
</tr>
<tr>
<td align="left" valign="middle">January 2025</td>
<td align="left" valign="middle">Follow-up/end of clinical course</td>
<td align="left" valign="middle">Death: The patient succumbed to multiple organ failure secondary to the progression of advanced HCC (approximately 2&#x202F;months post-procedure)</td>
</tr>
</tbody>
</table>
</table-wrap>
<p>Following the onset of severe EGVB and the failure of endoscopic hemostasis, the patient&#x2019;s condition became critical. Given that TIPS was contraindicated due to the extensive main portal vein tumor thrombus and progressive liver dysfunction, a multidisciplinary team (MDT)&#x2014;comprising internal medicine, interventional radiology, ICU, endoscopy, and ultrasound departments&#x2014;recommended PPCV. Written informed consent was obtained from the patient&#x2019;s family.</p>
<p>The procedure was performed as follows: First, under ultrasound guidance, the right main branch of the portal vein was successfully punctured percutaneously using an 18G needle. A guidewire (0.89&#x202F;mm&#x202F;&#x00D7;&#x202F;150&#x202F;cm, Terumo Corporation, Japan) was inserted. Under digital subtraction angiography (DSA) guidance, a drainage catheter (8F&#x202F;&#x00D7;&#x202F;25&#x202F;cm, Argon Medical Devices, United States) was advanced past the main portal vein tumor thrombus and positioned into the superior mesenteric vein. The distal end of the drainage catheter was coiled into a pigtail shape to ensure stability (<xref ref-type="fig" rid="fig2">Figure 2B</xref>, green dashed arrow). The extracorporeal portion of the portal drainage catheter was then connected to the existing subclavian central venous catheter using a sterile standard IV extension set (<xref ref-type="fig" rid="fig2">Figure 2</xref>, blue dashed line).</p>
<p>Postoperatively, to prevent thrombosis within the circuit, the patient received a continuous infusion of unfractionated heparin of 12&#x202F;U/kg/h via the catheter, maintaining the activated partial thromboplastin time (APTT) at 1.5&#x2013;2.0 times the control value (<xref ref-type="bibr" rid="ref15">15</xref>).</p>
<p>Direct portal pressure measurements were obtained via the drainage catheter immediately before and 30&#x202F;min after connection to the central venous line. The pressure dropped significantly from 40.6&#x202F;mmHg (pre-connection) to 18.8&#x202F;mmHg (post-connection). Post-procedural monitoring revealed a transient rise in liver enzymes and bilirubin (e.g., AST: 410&#x202F;U/L, ALT: 105&#x202F;U/L on 1 December), consistent with post-embolization syndrome. However, these parameters revealed a clear recovery trajectory coinciding with the hemodynamic relief provided by the shunt. By 9 December, key indicators had significantly improved (AST: 99&#x202F;U/L, TB: 25.3&#x202F;&#x03BC;mol/L, and albumin: 34.3&#x202F;g/L), providing biochemical corroboration of the procedural success. Subsequently, pressure was monitored twice daily for 1&#x202F;week, maintaining a direct portal venous pressure range of 18&#x2013;28&#x202F;mmHg (<xref ref-type="bibr" rid="ref16">16</xref>).</p>
<p>Post-procedure, the patient continued fasting and received symptomatic treatment, including hepatoprotective agents, gastric protection, and human serum albumin. Under continuous heparin flushing, no obvious bloody drainage was observed from the gastric tube within 24&#x202F;h, nor was there any melena. Hemoglobin levels stabilized. The patient was transferred from the ICU to the general ward after 1&#x202F;week. His condition stabilized, allowing for discharge 2&#x202F;weeks post-procedure, at which point the PPCV catheters were removed. Notably, the patient resumed a liquid diet 3&#x202F;days after PPCV, with no recurrence of hematemesis or melena from the resumption of oral intake until discharge. Serial blood ammonia levels measured at 24&#x202F;h, 48&#x202F;h, 72&#x202F;h, 1&#x202F;week, and 2&#x202F;weeks post-operation showed no significant elevation, and liver function did not deteriorate further.</p>
<p>However, 2&#x202F;months later, the patient succumbed to the progression of his underlying advanced malignancy. The cause of death was multiple organ failure secondary to tumor progression, as the patient and family had declined further anti-tumor therapy (<xref ref-type="bibr" rid="ref17">17</xref>).</p>
</sec>
</sec>
<sec sec-type="discussion" id="sec5">
<title>Discussion</title>
<p>We present a case of a patient with hepatocellular carcinoma (CNLC Stage IIIa) complicated by main portal vein tumor thrombus and decompensated cirrhosis, presenting with recurrent, life-threatening esophagogastric variceal bleeding. Current literature establishes that PVTT is a major predictor of a poor prognosis in HCC (<xref ref-type="bibr" rid="ref21">21</xref>). By obstructing portal flow, PVTT exacerbates portal hypertension (PH), leading to severe complications such as EGVB, refractory ascites, and portal hypertensive enteropathy (<xref ref-type="bibr" rid="ref9">9</xref>, <xref ref-type="bibr" rid="ref22">22</xref>). These complications not only deteriorate liver function and increase mortality risk (<xref ref-type="bibr" rid="ref11">11</xref>) but also severely limit the feasibility of subsequent anti-tumor treatments (<xref ref-type="bibr" rid="ref23">23</xref>).</p>
<p>Although the patient had previously received targeted therapy (lenvatinib and bevacizumab) and immunotherapy (tislelizumab and sintilimab) known to improve survival in BCLC Stage C patients (<xref ref-type="bibr" rid="ref12">12</xref>, <xref ref-type="bibr" rid="ref14">14</xref>), recurrent EGVB necessitated the cessation of these life-prolonging medications, contributing to rapid tumor progression.</p>
<p>While TIPS is generally the gold standard for refractory variceal bleeding due to its efficacy in reducing portal pressure (<xref ref-type="bibr" rid="ref24">24</xref>, <xref ref-type="bibr" rid="ref25">25</xref>) and bridging patients to systemic therapy (<xref ref-type="bibr" rid="ref10">10</xref>, <xref ref-type="bibr" rid="ref18">18</xref>, <xref ref-type="bibr" rid="ref25">25</xref>), its application in patients with extensive PVTT (Vp4) or cavernous transformation remains controversial and technically demanding. Although advances in portal vein recanalization (PVR) (<xref ref-type="bibr" rid="ref26">26</xref>) and transcollateral TIPS (<xref ref-type="bibr" rid="ref27">27</xref>, <xref ref-type="bibr" rid="ref28">28</xref>) have expanded indications, the complete occlusion of the portal vein by tumor thrombus or cavernous transformation in our patient, combined with his hemodynamic instability, made these complex procedures unfeasible. Similarly, transjugular extracorporeal portosystemic shunt (TEPS) requires highly specialized expertise and was not a viable option in this emergency setting (<xref ref-type="bibr" rid="ref29">29</xref>).</p>
<p>PPCV represents a novel technical innovation developed by our team. To the best of our knowledge, this is the first reported clinical application globally. Mechanistically, PPCV shares the fundamental principle of TIPS: creating a portosystemic shunt to lower portal pressure. However, it offers several distinct advantages in this specific high-risk population: (1) High success rate: Percutaneous ultrasound-guided puncture of the portal vein is technically straightforward and allows for rapid access. In this case, success was achieved on the first attempt. (2) Rapid implementation: By using a pre-existing central venous catheter, the shunt can be established immediately by connecting the external circuits, avoiding the time-consuming steps of internal stent placement. (3) Reduced procedural risk: The technique uses a small puncture tract, minimizing the risk of capsular bleeding or parenchymal injury associated with traditional TIPS, which is critical for hemodynamically unstable patients. (4) Controllability: The extracorporeal nature of the shunt allows for flow regulation. This helps prevent complications associated with sudden hemodynamic shifts, such as overt hepatic encephalopathy. In our case, blood ammonia levels remained stable for 2&#x202F;weeks. (5) Bridging capability: PPCV provides a crucial window for endoscopic healing or medical stabilization.</p>
<p>Despite its success in this case, PPCV has limitations inherent to its external design: (1) Risk of catheter dislodgment: As an external device, secure fixation is paramount. In this case, meticulous nursing care prevented dislodgment. (2) Thrombotic complications: The long external tubing increases the risk of thrombosis. Continuous heparin flushing was required. Although no active bleeding occurred, catheter thrombosis and blockage were observed during the course, which were successfully managed by catheter exchange and re-insertion. This highlights the necessity of careful balancing between bleeding and clotting risks. (3) Temporary nature: The device was removed after 2&#x202F;weeks. Data regarding the long-term safety and feasibility of prolonged PPCV use are lacking.</p>
</sec>
<sec sec-type="conclusions" id="sec6">
<title>Conclusion</title>
<p>PPCV has been proven to be a simple, feasible, and effective salvage technique for controlling refractory bleeding in a complex case of HCC with PVTT where TIPS was contraindicated. It successfully reduced portal pressure and achieved hemostasis without immediate complications. While it does not alter the oncological prognosis of advanced HCC, PPCV offers a valuable therapeutic bridge for high-risk patients. Further studies are warranted to refine technical protocols, define optimal indications, and evaluate safety in a larger cohort.</p>
</sec>
</body>
<back>
<sec sec-type="data-availability" id="sec7">
<title>Data availability statement</title>
<p>The raw data supporting the conclusions of this article will be made available by the authors, without undue reservation.</p>
</sec>
<sec sec-type="ethics-statement" id="sec8">
<title>Ethics statement</title>
<p>The studies involving humans were approved by Guangxi Medical University Cancer Hospital Ethical Review Committee. The studies were conducted in accordance with the local legislation and institutional requirements. The participants provided their written informed consent to participate in this study. Written informed consent was obtained from the individual(s) for the publication of any potentially identifiable images or data included in this article.</p>
</sec>
<sec sec-type="author-contributions" id="sec9">
<title>Author contributions</title>
<p>GD: Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing &#x2013; original draft, Writing &#x2013; review &#x0026; editing. ST: Conceptualization, Formal analysis, Writing &#x2013; original draft, Writing &#x2013; review &#x0026; editing, Methodology. MH: Conceptualization, Investigation, Writing &#x2013; original draft, Writing &#x2013; review &#x0026; editing. CZ: Conceptualization, Formal analysis, Writing &#x2013; original draft, Writing &#x2013; review &#x0026; editing. XC: Conceptualization, Data curation, Formal analysis, Funding acquisition, Methodology, Project administration, Resources, Supervision, Visualization, Writing &#x2013; original draft, Writing &#x2013; review &#x0026; editing.</p>
</sec>
<sec sec-type="COI-statement" id="sec10">
<title>Conflict of interest</title>
<p>The author(s) declared that this work was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.</p>
</sec>
<sec sec-type="ai-statement" id="sec11">
<title>Generative AI statement</title>
<p>The author(s) declared that Generative AI was not used in the creation of this manuscript.</p>
<p>Any alternative text (alt text) provided alongside figures in this article has been generated by Frontiers with the support of artificial intelligence and reasonable efforts have been made to ensure accuracy, including review by the authors wherever possible. If you identify any issues, please contact us.</p>
</sec>
<sec sec-type="disclaimer" id="sec12">
<title>Publisher&#x2019;s note</title>
<p>All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.</p>
</sec>
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<fn-group>
<fn fn-type="custom" custom-type="edited-by" id="fn0002">
<p>Edited by: <ext-link ext-link-type="uri" xlink:href="https://loop.frontiersin.org/people/1852988/overview">Ying-Hong Feng</ext-link>, Uniformed Services University of the Health Sciences, United States</p>
</fn>
<fn fn-type="custom" custom-type="reviewed-by" id="fn0003">
<p>Reviewed by: <ext-link ext-link-type="uri" xlink:href="https://loop.frontiersin.org/people/3224504/overview">Long Wu</ext-link>, Wuhan University, China</p>
<p><ext-link ext-link-type="uri" xlink:href="https://loop.frontiersin.org/people/1482401/overview">Xin Quan</ext-link>, Sichuan University, China</p>
</fn>
</fn-group>
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