MEETING No. 42, MAY 11th, 2002, ISTITUTO CANTONALE DI PATOLOGIA, LOCARNO, SWITZERLAND

Case 1
Case 2
Case 3
Case 4
Case 5

Case 4


"KIDNEY LESIONS"
C. GALLI - Niguarda Hospital - Milano
(Pict. by dr. Faravelli)

Clinical history: a woman presents because of two lesions, one in the right and the other in the left kidney.
One of the two lesions is diagnosed as a clear cell type renal cell carcinoma (Pict. 1).
The other lesion, which is underneath the renal capsule and measures 2.5cm, is yellow-brownish in colour.
Microscopical description: the lesion consists mainly of spindled cells, contains a lot of blood vessels and numerous hemorrhagic areas (Pict. 2 - Pict. 3 - Pict. 4 - Pict. 5).
The spindled cells are positive with immunohistochemical staining for Alpha-Actin and are focally positive for the Anti-melanoma antigen (Pict. 6); they are negative for Cytokeratin, EMA, CD34, S100 and Desmin.

Diagnosis

Pict. 1	Pict. 2
Pict. 3	Pict. 4
Pict. 5	Pict. 6

Click here to send your comments.