Case for diagnosis. Atypical fibroxanthoma.
Atypical fibroxanthoma is a rare cutaneous tumor found mainly in elderly people on sun-exposed areas of the body. Histologically, atypical fibroxanthoma is considered a malignant fibrous histiocytoma with bizarre neoplastic cells, marked pleomorphism, hyperchromatic nuclei and abundant mitoses. It must be differentiated from other skin tumors, usually by immunohistochemistry, since its diagnosis is made by exclusion.
Teaching Hospital, Federal University of Paraná, Curitiba, PR, Brazil. mari-hammer@hotmail.com
Mariana
M
Hammerschmidt
Luciana Menezes de
LM
Azevedo
Anelisa
A
Ruaro
Betina
B
Werner
Alexandre do
Ad
Nascimento
Ezio Augusto
EA
Amaral Filho
D000369:Aged, 80 and over; D005153:Facial Neoplasms / Q000473:pathology*; D005260:Female; D051677:Histiocytoma, Malignant Fibrous / Q000473:pathology*; D006801:Humans; D012878:Skin Neoplasms / Q000473:pathology*