Japanese cases of microcystic adnexal carcinoma predominantly affect the right side of the face

Masanori Ban


Microcystic adnexal carcinoma is considered to have predisposition developing in ultraviolet exposed areas, especially the left-side face on which drivers get sunlight in the USA. The present study analyzed 141 cases in Japan where drivers get facial sun exposure on the right-side. Out of 102 facial lesions, 11 occurred on the midline, 54 on the right-side, 28 on the left-side and sides of 9 were unknown. The right-side predominance was remarkable on the perioral region, but not shown on the cheek. This result is insufficient to support the possibility that ultraviolet exposure induces microcystic adnexal carcinoma.

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