Microcystic adnexal carcinoma: review of 51 Japanese patients.
BACKGROUND
Microcystic adnexal carcinoma (MAC) has been reported to occur predominantly in Caucasians. However, the number of cases in Japanese subjects seems to have recently been increasing.


OBJECTIVE
To review the Japanese cases of MAC.


METHODS
We collected and analyzed the data of 51 Japanese patients recorded in case reports or abstracts over a number of years.


RESULTS
Twenty-five of the cases were reported between 1987 and 1996, and the remaining 26 cases between 1997 and 2000. Forty-three lesions were located on the face, 2 on the scalp, 2 on the chest, 1 on the axilla, 1 on the buttock, 1 on the palm and 1 on the toe. One of the above occurred at the site of previous radiotherapy. Fifteen tumors were initially misdiagnosed histopathologically.


CONCLUSIONS
Our review shows that MAC also occurs in the Japanese, in whom it may be more common than previously observed.
Ohtsuka
Hisashi
H
Surgical Division, Ehime University Hospital, Ehime, Japan. ohtsuka@m.ehime-u.ac.jp
Nagamatsu
Shogo
S
D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D001707:Biopsy, Needle; D018280:Carcinoma, Skin Appendage / Q000175:diagnosis* / Q000453:epidemiology* / Q000601:surgery; D005260:Female; D006801:Humans; D015994:Incidence; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012307:Risk Factors; D017678:Sex Distribution; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000601:surgery; D013544:Sweat Gland Neoplasms / Q000175:diagnosis* / Q000453:epidemiology* / Q000601:surgery