Basal Cell Carcinoma in Two White Women in Their Thirties

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  • ３０代白人女性に発症した基底細胞癌の２例

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We report here basal cell carcinoma in two white women in their thirties. Case 1 : A 34-year-old white woman from New Zealand had two light red nodules, one on the left forearm and the other on the right chest. Case 2 : A 35-year-old white woman from U.S.A. had two light red nodules, one on the right shoulder and the other one on the left forearm. Histopathological diagnosis of these four nodules was basal cell carcinoma. We examined the differences in basal cell carcinoma between overseas patients and Japanese patients, including the 143 cases at our hospital during the past 15 years. There was a peak of onset in patients in their sixties, in both oversea patients and Japanese patients. The two cases described here are rare because the patients were only in their thirties at onset. Multiple basal cell carcinomas were found in 1.6-3.0% of Japanese and in 6.6% of U.S.A. patients. Approximately 80% of basal cell carcinomas are pigmented in Japanese patients and about 70% in Korean patients, while only about 10% are pigmented according to an overseas report from U.S.A. The high incidence of pigmentation in basal cell carcinoma is one of the characteristic features of basal cell carcinoma in Japanese and also in Korean patients.

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