Back issues No.4 - 2001 / Case Report  

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Multiple Subcutaneous Trichoblastomas
Nan-Lin Wu, Yang-Chih Lin, Hsiu-Chin Chen, Hsin-Yi Su
Dermatol Sinica 19: 300-304, 2001

Trichoblastoma is a very rare trichogenic tumor. It usually presents as a solitary nodule, and multiple lesions are rarely encountered. Here we report a case of multiple trichoblastomas over the groin, buttocks, trunk, shoulders and arms of a 25 year-old man, who had noticed these slowly growing, asymptomatic subcutaneous tumors for many years. Four tumors were resected and all showed similar histologic features. They were well-circumscribed subcutaneous epithelial-mesenchymal lesions with limited follicular differentiation and broad morphologic growth patterns. We discuss previously published cases and the differential diagnosis.

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