[Pilomatrix carcinoma--report of the second case in Japan and a review of the literature].
A 53-year-old man had a rapidly growing tumor, measured 3 cm in diameter, on his left temporal region of 2 months' duration. The lesion showed histological resemblance to pilomatricoma but differed by the presence of irregular nests of atypical basophilic cells (basaloid cells) with focal squamoid differentiation and a large number of atypical mitoses. A review of 16 cases of pilomatrix carcinoma documented since the year of 1980 indicated that this tumor occurs in males three times more frequently than in females. 75% of all patients were over forty years old. Recurrences were seen in 6 of the 10 patients whose tumor had been resected simply, but there was no evidence of recurrence in the 4 patients with a wide resection of tumor.
Department of Dermatology, Akita University School of Medicine.
T
T
Masahashi
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S
Takahashi
O
O
Maie
D002294:Carcinoma, Squamous Cell / Q000453:epidemiology / Q000473:pathology*; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D012867:Skin / Q000473:pathology*; D012878:Skin Neoplasms / Q000453:epidemiology / Q000473:pathology*