MEETING No. 17, HELD ON FEBRUARY 17th, 2000, SAN PIO X PRIVATE HOSPITAL, MILANO

Case 1
Case 2
Case 3
Case 5
Case 6

Case 4

"POLYPOID LESION ON THE FOREARM"
L. TACCAGNI - San Raffaele Hospital - Milano
(pictures by dr. Faravelli)

Clinical history: a 48y.o. man present with a 2 cm. polypoid lesion on the forearm; the lesion is covered by epidermis and mobile on the deep soft tissue.
Microscopic description: the lesion is well defined in respect of the epidermis and the soft tissues of the hypodermis (pict. 1); it consists of monomorphic spindled cells with storiform pattern of growth (pict. 2) - (pict. 3) - (pict. 4) - (pict. 5) - (pict. 6).
There are no atypical forms and the mitotic index is low.
The immunohistochemical staining are negative with protein S100 and positive with EMA (pict. 7).
Electron microscopy shows micro-pinocytotic vesicles, basal lamina-like substance (pict. 8) and long cytoplasm processes with filaments (pict. 9).

Diagnosis

pict. 1	pict. 2
pict. 3	pict. 4
pict. 5	pict. 6
pict. 7	pict. 8
pict. 9

Click here to send your comments.