OBJECTIVE: Our goal was to describe the features of benign hepatocellular tumors on superparamagnetic iron oxide (SPIO)-enhanced MR images and to evaluate the potential role of SPIO administration in the diagnosis of these tumors. MATERIALS AND METHODS: The T1- and T2-weighted SE images were performed before and after SPIO administration in 19 patients with focal nodular hyperplasia (FNH) or adenomas. The lesions were counted and qualitatively assessed. In 32 tumors with a diameter of > 10 mm, the contrast-to-noise ratio (CNR) and the liver and tumor enhancement were calculated. RESULTS: Thirty-seven tumors were detected on MR images: 29 before and 36 after SPIO administration (p < 0.05). The SPIO-enhanced T1-weighted images provided the highest detection rate and CNR. The central scar was most conspicuous on SPIO-enhanced T2-weighted images. Most FNHs and adenomas lost less signal than the liver, three tumors did not lose signal, and four FNHs showed a signal loss equal to or greater than that of the liver. CONCLUSION: The SPIO-enhanced T1-weighted images increased the CNR and the detection rate of benign hepatocellular tumors. On T2-weighted images, most benign hepatocellular tumors showed a signal decrease after SPIO administration. No significant difference in signal loss was observed between FNH and adenomas.

Adenoma↗

PubMedDate not supplied

Diagnosis of acute intestinal ischemia by color Doppler sonography. Color Doppler sonography and acute intestinal ischemia.

Detection of acute intestinal ischemia is a diagnostic challenge. Color Doppler sonography of the abdomen may contribute to its diagnosis by showing lesions of the gut wall associated with occlusion or stenosis of the mesenteric vessels. Our overview of the sonographic findings of acute intestinal ischemia is presented as well as a proposition of algorithm for the working up to the diagnosis based on recent clinical experience.

Arterial Occlusive Diseases↗

PubMedDate not supplied

[Contribution of retrograde cholangiography in a case of primary sclerosing cholangitis (author's transl)].

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Adult↗

PubMedDate not supplied

Intraductal papillary-mucinous tumours of the pancreas. Clinical and radiological aspects.

Intraductal papillary-mucinous tumours are rare epithelial tumours with all intermediate types occurring from papillary to mucin-hypersecreting forms. They affects generally old men and recurring pancreatitis is the main clinical feature. Endoscopic Retrograde Pancreatography is the best diagnostic method, showing large dilatation of the ducts and filling defects due to mucin's plugs or papillary tumour. IPMT are slow-growing and have low malignant potential; as to far, surgical resection is considered mandatory, however, better distinction between benign and malignant evolution will probably select cases in which conservative follow-up may be proposed.

Adenocarcinoma, Mucinous↗