Basaloid type adenoid cystic carcinoma of the breast.
We report a case of adenoid cystic carcinoma (ACC) of the breast with a prominent basaloid feature. The patient was a 62-year-old Japanese woman with a right breast mass, measuring 1.5 cm in diameter. Histologically, the tumor was composed of basal cell-like tumor cells, and it was originally diagnosed as invasive ductal carcinoma. The presence of PAS-positive basement membrane material around the tumor cell nests may be a diagnostic clue to ACC. The prognosis of ACC of the breast is considered to be favorable. However, basaloid type ACC may represent a poor prognosis, since our case revealed an aggressive behavior in spite of its small size.
Fukuoka
K
K
Department of Pathology, Kawasaki Medical School, Kurashiki, Okayama, Japan.
Hirokawa
M
M
Shimizu
M
M
Sadahira
Y
Y
Manabe
T
T
Kurebayashi
J
J
Sonoo
H
H
D001943:Breast Neoplasms / Q000473:pathology*; D003528:Carcinoma, Adenoid Cystic / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged