MEETING No. 23, SEPTEMBER 20th, 2000, CREMA HOSPITAL

Case 1
Case 2
Case 3
Case 4

Case 1

"A TUMOR INFILTRATING THE CAROTID ARTERY"
C. GALLI - Niguarda H. - Milano
(pict. by dr. Crippa)

Clinical history: a 49y.o. woman presented with a 5 cm. mass in the right temporal, para-pharyngeal fossa, which extended towards the foramen lacerum and the sinus cavernosus, strictly adherent to the carotid artery.
The patient undergoes surgical exploration and a frozen section is performed but the diagnosis is still uncertain between a malignant and a benign lesion, therefore the mass is removed.
Microscopic description: the lesion consists of monomorphic epithelial cells with glandular-tubular features and more solid areas, where a prominent desmoplastic reaction is also evident ( pict. 1) - ( pict. 2) - ( pict. 3) - ( pict. 4) - ( pict. 5) - ( pict. 6).
The neoplastic cells show a finely granular or foamy cytoplasm ( pict. 7) - ( pict. 8) - ( pict. 9) - ( pict. 10).
There are no mitosis. The neoplastic cells are negative with immunohistochemical staining for alfa-1-anti-trypsin.

Diagnosis

pict. 1	pict. 2
pict. 3	pict. 4
pict. 5	pict. 6
pict. 7	pict. 8
pict. 9	pict. 10

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