A patient with hepatocellular carcinoma exhibiting a concentric structure of different histologic grades was examined with chondroitin sulfate iron colloid (CSIC)-enhanced MR imaging. After CSIC injection, the advanced component was enhanced in comparison with the surrounding liver, and the well-differentiated component was not enhanced. CSIC-enhanced MR imaging was helpful in evaluating histologic grade on the basis of reticuloendothelial function.

Carcinoma, Hepatocellular↗

PubMedDate not supplied

Diagnostic usefulness of MR imaging for pedunculated hepatocellular carcinoma.

Pedunculated hepatocellular carcinoma (HC) is an uncommon tumor of the liver. We present the case of a 56-year-old man with pedunculated HC arising from the lower surface of the liver. We recommend sagittal magnetic resonance imaging, which offers a superior choice of scanning planes, in the diagnosis of pedunculated HC.

Carcinoma, Hepatocellular↗

PubMedDate not supplied

Inflammatory pseudotumors of the spleen: CT and MRI findings.

OBJECTIVE: Our goal was to elucidate the CT and MRI findings of inflammatory pseudotumors of the spleen. METHODS: The CT and MRI findings of three patients with inflammatory pseudotumors of the spleen were reviewed and compared with the pathologic findings. RESULTS: On the early phase of CT, the masses were hypodense to the normal spleen, and on the delayed phase, they demonstrated delayed enhancement. On T1-weighted MR images, the masses were isointense to the normal spleen, and on T2-weighted images, the masses had heterogeneous low signal intensities. After administration of Gd-DTPA, the masses showed delayed enhancement. CONCLUSION: Inflammatory pseudotumors of the spleen were characterized by low signal intensity on T2-weighted MR images and delayed enhancement after contrast material administration on CT and MRI. The fibrous stroma may contribute to these unusual findings.

Adult↗

PubMedDate not supplied

Aspergillus arvii spec. nov., a new animal pathogen?

Aspergillus arvii sp. nov. Aho, Horie, Nishimura & Miyaji isolated from liver lesions of a dairy cow in Finland, is suggested to represent a new species. It differs from the other members of the Aspergillus fumigatus group by its stable brown colony colour, the ornamentation of its conidia as well as the shape of the vesicles and length of conidiophores.

Animals↗