Gadodiamide and gadopentetate dimeglumine in MRI versus spiral CT in the diagnosis of liver lesions.
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Biomedical subjects
Publications and source records attributed to C L'Hermine.
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A 15-month-old girl, who presented with biliary cirrhosis secondary to cystic fibrosis with refractory ascites and recurrent intestinal bleeding, underwent percutaneous transjugular intrahepatic portosystemic shunting. Immediately following the procedure the ascites disappeared and no further bleeding occurred. The stent shunt was patent on Doppler ultrasound until the 22nd day. The patient died on day 22 because of liver failure due to a low-flow syndrome with severe hepatic ischaemia, but with no recurrence of bleeding or ascites.
The results of percutaneous transhepatic endoprosthesis in the treatment of biliary stenosis are discussed on the basis of the reports of the literature and a personal experience of more than 400 patients treated for about 15 years. Advantages and disadvantages of conventional stents as compared with metal endoprosthesis are discussed, the latter being now preferred by most authors. However they do not prove to be more efficient than conventional stents which are suitable for those patients who have a relatively short life expectancy. Percutaneous treatment of benign biliary stenosis has grown as well but the choice of the best procedure remains difficult. Metal endoprostheses are controversial because the risk of delayed obstruction has not yet been clearly evaluated. However it might become an interesting therapeutic procedure in the future.
Late portal vein thrombosis of liver grafts is uncommon and is usually revealed by variceal bleeding. We herein report a case of thrombosis discovered in an adult 10 months after liver transplantation, due to stenosis of the portal vein by extrinsic compression, probably secondary to a biopsy-induced hematoma. Development of venous collateral circulation allowed for normal function of the liver graft.
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Waterhouse-Fridericksen syndrome is a rare possibility in the adult. The case reported here included full radiological evaluation. The diagnosis was made by ultrasonographic and CT scan imaging. Nuclear magnetic resonance imaging was obtained for the purposes of documentation.
Rectal hemorrhage of massive proportions in 4 patients was due to vascular erosion of a necrotic pancreatitis focus, and fistulization at the splenic angle of colon. This serious complication may arise during the course of acute pancreatitis or an acute episode of chronic pancreatitis. A literature review showed 22 similar cases reported. Diagnosis is suggested by the discovery of a stenosis of colon in a case of pancreatitis, and can be confirmed by emergency arteriography or operative findings. Hemorrhage is usually from the splenic artery but erosion of a left renal artery has been described. Treatment is by embolization during angiography followed by drainage of the pancreatic necrosis and a colon bypass operation, or by splenopancreatectomy combined with colectomy. Use of these two procedures led to recovery in the 4 cases reported.
The authors recall the main pathologic and physiopathologic data necessary to understand the angiographic patterns of hepatic alveolar echinococcosis, by means of a rereading of a personal series of 37 cases. They show that this affection has a diagnostic angiographic shape which associate four signs: avascular aspect of the lesions, regular invasion of vessels, presence of a collateral circulation, absence of neovascularisation. Digestive angiography stays a good diagnostic method for the parasitosis, when epidemiological context, ultrasound or CT scan gave no explicit conclusion. It keeps an interest in the preoperative evaluation and in the supervision of portal vein.
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Intraluminal diverticulum of the esophagus is exceptive. It characteristic radiograhic appearance is of a smooth ovoid collection of barium surrounded by a smooth, thin radiolucent line. The diverticulum was plainly within the esophageal lumen. The diverticulum was not demonstrated on every barium study. One case of a 79 year old goitred female with intraluminal esophageal diverticulum is reported. Possible causes are considered.
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