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| 1 | Imaging and radiological interventions in extra-hepatic portal vein obstruction显示文摘Extrahepatic portal vein obstruction(EHPVO) is a primary vascular condition characterized by chronic long standing blockage and cavernous transformation of portal vein with or without additional involvement of intrahepatic branches, splenic or superior mesenteric vein. Patients generally present in childhood with multiple episodes of variceal bleed and EHPVO is the predominant cause of paediatric portal hypertension(PHT) in developing countries. It is a pre-hepatic type of PHT in which liver functions and morphology are preserved till late. Characteristic imaging findings include multiple parabiliary venous collaterals which form to bypass the obstructed portal vein with resultant changes in biliary tree termed portal biliopathy or portal cavernoma cholangiopathy. Ultrasound with Doppler, computed tomography, magnetic resonance cholangiography and magnetic resonance portovenography are non-invasive techniques which can provide a comprehensive analysis of degree and extent of EHPVO, collaterals and bile duct abnormalities. These can also be used to assess in surgical planning as well screening for shunt patency in post-operative patients. The multitude of changes and complications seen in EHPVO can be addressed by various radiological interventional procedures. The myriad of symptoms arising secondary to vascular, biliary, visceral and neurocognitive changes in EHPVO can be managed by various radiological interventions like transjugular intra-hepatic portosystemic shunt, percutaneous transhepatic biliary drainage, partial splenic embolization, balloon occluded retrograde obliteration of portosystemic shunt(PSS) and revision of PSS. | Sudheer S Pargewar Saloni N Desai S Rajesh Vaibhav P Singh Ankur Arora Amar Mukund | 2016 | World Journal of Radiology2016，8，6： | 8 |
| 2 | Extensive calcifications in portal venous system in a patient with hepatocarcinoma显示文摘Calcification of the portal venous system is a rare entity that can be incidentally discovered during computed tomography(CT).We describe a case of extensive calcifications in the portal venous system in a middleaged male patient with hepatocellular carcinoma(HCC).This patient presented with epigastric pain that had no obvious origin prior to admission.Laboratory examinations were positive for hepatitis B surface antigen andα-fetoprotein,and severe esophageal and gastric varices were detected during gastroscopy.Abdominal X-ray plain film showed well-defined linear and tracklike calcification,with irregular margins directed along the course of the portal venous system.CT revealed extensive calcifications along the course of the portal,splenic,superior mesenteric and gastroesophageal veins.He underwent splenectomy 22 years ago due to splenomegaly and partial hepatectomy seven months before because of HCC of low-grade differentiation,confirmed by pathology.Finally,the patient was diagnosed with postoperative recurrent HCC and extensive portal venous system calcification after selective hepatic angiography under digital subtraction angiography. | Cheng-En Wang Cheng-Jian Sun Shuai Huang Yan-Hua Wang Ling-Ling Xie | 2014 | World Journal of Gastroenterology2014，20，43： | 1 |
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