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Updated: Feb 1, 2026

Drosophila Pupal Abdomen Immunohistochemistry
Published on: October 2, 2011
Concomitant fibrofolliculoma and trichodiscoma on the abdomen
Jessica Riley1, Leela Athalye2, Donna Tran2
1Department of Dermatology, St. Joseph Mercy Health System, Ann Arbor, Michigan, USA.
Abstract:
Fibrofolliculoma and trichodiscoma are adnexal tumors that arise from or around hair follicles and are two of the many characteristic features of Birt-Hogg-Dubé (BHD) syndrome. Fibrofolliculoma and other hair follicle hamartomas can be differentiated from their clinically indistinct counterparts (eg, trichodiscomas, trichoadenomas) by histologic and staining comparison. We report a rare case of a 54-year-old man who presented with a subcutaneous papule on the abdomen that was histologically proven to have features of both a solitary fibrofolliculoma and trichodiscoma.
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