[Multifocal tuberculosis simulating multimetastatic colon cancer in an immunocompetent black African patient: a case report].

Multifocal tuberculosis is rare in immunocompetent subjects. It is characterized by the involvement of at least two extra-pulmonary sites, associated or not with lung disease. It is often difficult to diagnose.

[Retinoblastoma in Senegal: Pathologist's view].

Objectives: Describe the macroscopic and microscopic profiles of the retinoblastoma (RB) in Senegal and correlate histological criteria to evolution to emerge severity factors.

Methodology: We realized a retrospective study on 10years (January 2005-December 2014). Only patients (n=67) who performed a histological analysis of the enucleation specimen (n=68) were followed until the end of the study.

[A rare parotid tumor].

Introduction: Sebaceous lymphadenoma of the parotid (SLP) is a rare, benign tumor with similar epidemiological and macroscopic characteristics with other sebaceous differentiated tumors of the parotid (SDTP). The authors report a case of SLP in an 80-year-old woman. They then recall the distinctive histological and immunohistochemical criteria of SDTP.

[Muscular metastases from renal cell carcinoma].

Renal cell carcinoma can metastasize to several locations but rarely in muscles. However, this possibility must never be overlooked because muscle metastases may occur a very long time after the initial nephrectomy. So the post-operative follow-up, according to the recommendations, with thoraco-abdomino-pelvic imaging (computed tomography or nuclear magnetic resonance) allowing to detect metastases, including muscle metastases in the trunk, does not have to neglect the metastases located in the members.

[Watermelon stomach: Chronic renal failure and/or imatinib?].

Watermelon stomach or gastric antral vascular ectasia (GAVE) syndrome is an uncommon cause of sometimes severe upper gastro-intestinal bleeding. Essentially based on a pathognomonic endoscopic appearance, its diagnosis may be unrecognised because mistaken with portal hypertensive gastropathy, while treatment of these two entities is different. Its etiopathogeny remains still unclear, even if it is frequently associated with different systemic illnesses as hepatic cirrhosis, autoimmune disorders and chronic renal failure.

Embryonal tumor with multilayered rosettes: diagnostic tools update and review of the literature.

Embryonal tumor with multilayered rosettes (ETMR), including embryonal tumor with abundant neuropil and true rosettes (ETANTR), and ependymoblastoma (EBL) constitute a distinct entity of the primitive neuroectodermal tumor (PNET) family. The presence of a focal amplification at chromosome region 19q13.42 associated with an up-regulation of the oncogenic miRNA cluster C19MC suggests that they may represent a histological spectrum of a single biological entity.