[An exceptional hepatic tumor].

Background: Hepatic localization of non Hodgkin's lymphoma is generally secondary. Primary localizations are rare.

Aim: To report a rare case of primary hepatic lymphoma particular by its association with dermatopolymyositis.

The utility of alpha-methyl CoA racemase (P504S) expression as a marker of renal cell carcinomas.

Background: Renal cell tumours are numerous and heterogeneous. Because of their clinicopathological heterogeneity, their accurate diagnosis may be challenging. In case of an equivocal diagnosis, immunohistochemistry may be a useful mean of diagnosis.