A rare case of retroperitoneal and mesenteric lymphangiomatosis.

Lymphagiomatosis are rare benign malformations of the lymphatic system. They are more commonly seen during childhood and are frequently asymptomatic and incidentally found in the adult patient. We report a case of a 31-year-old male who presented initially with melena. Computer tomography scan revealed multiple confluent, fluid-density lesions encasing the retroperitoneum and mesentery. A laparotomy and incisional biopsy of the mesenteric lesion was performed. Histologic examination demonstrated fibrofatty tissue with prominent, thick-walled endothelial-lined vessels. The histologic and computer tomography findings were consistent with a diagnosis of retroperitoneal and mesenteric lymphangiomatosis. The patient was subsequently discharged home well.

Recurrent pyogenic cholangitis: a review of imaging findings and clinical management.

Recurrent pyogenic cholangitis (RPC) is an infective process involving the biliary tree typified by pigmented intraductal calculi with dilatation of the intra- and extrahepatic biliary tree. Previously endemic to South-east Asia, RPC can now be seen in Western countries with the increasing access to international travel and immigration. Affected patients are often plagued by recurrent bouts of cholangitis, and commonly suffer from complications such as abscess formation and biliary strictures. In severe cases, cirrhosis with portal hypertension may develop. The disease is also a known risk factor for cholangiocarcinoma, and can be seen in up to 5% of affected patients. Its exact etiology is unknown, but parasitic infections such as Clonorchis sinensis and Ascaris lumbricoides, ascending bacterial infection with gut flora (Escherichia coli) and low socioeconomic status have been associated strongly with it. This paper reviews the imaging features of the disease, as well as the roles of interventional radiology and surgery with respect to management of the condition.