[Difficulty in diagnosing acute appendicitis in the presence of acute portal vein thrombosis: the role of CT scan. Report of 2 cases].

Acute appendicitis can cause of portal vein thrombosis. Diagnosis of appendicitis can be difficult because its symptoms may be masked by those of acute portal vein thrombosis. We report 2 cases of appendicitis associated with acute portal vein thrombosis whose diagnosis was delayed by several months.

Magnetic resonance imaging of shoulders with idiopathic adhesive capsulitis: reliability of measures.

The magnetic resonance imaging (MRI) findings in idiopathic adhesive capsulitis (AC) were compared with those of contralateral healthy shoulders and the reliability of measures assessed. Twenty-six consecutive patients (26 AC and 14 healthy shoulders) were prospectively assessed. The main measurements were thickness of the joint capsule and synovial membrane in the axillary recess and rotator interval in T1-weighted spin-echo sequence enhanced with intravenous (IV) gadolinium chelate (Gd-chelate).

[Hepatitis C virus infection and primary hepatic large B-cell lymphoma: a non-fortuitous association. Case report and review of literature].

We report a case of hepatitis C virus infection in association with primary hepatic large B-cell non-Hodgkin's lymphoma. Primary hepatic non-Hodgkin's lymphoma is a rare disease. Association of hepatitis C virus infection with primary hepatic B-cell non-hodgkin's lymphoma is probably not fortuitous.

Unexpected MR-T1 enhancement of endocrine liver metastases with mangafodipir.

With the use of available liver magnetic resonance contrast agents, such as mangafodipir (Mn-DPDP), liver metastases do not exhibit enhancement on T1-weighted images. This absence of enhancement is due to the lack of hepatocytes within these tumors. The purpose of this report is to demonstrate an unexpected enhancement on T1-weighted images 30 minutes after injection of mangafodipir, in the case of endocrine liver metastases from a non-hyperfunctioning neuroendocrine pancreatic tumor.

Benign and malignant hepatocellular tumors: evaluation of tumoral enhancement after mangafodipir trisodium injection on MR imaging.

The aim of this work was to study the ability of mangafodipir trisodium (Mn-DPDP)-enhanced MR imaging in differentiating malignant from benign hepatocellular tumors. Eleven patients with pathologically proved hepatocellular carcinomas, six with focal nodular hyperplasias, and one with a single hepatocellular adenoma were examined by spin-echo and gradient-echo T1-weighted sequences before, 1 h after, and 24 h after intravenous injection of Mn-DPDP (5 micromol/kg). Quantitative analysis including enhancement and lesion-to-liver contrast-to-noise ratio, and qualitative analysis including the presence of a central area and a capsule were done on pre- and post-Mn-DPDP-enhanced images.