Answer of Dermatopathology Case 38
Trichoblastoma Visit: Pathology of Trichoblastoma Visit: Dermatopathology site Abstract: Cytologic features of trichoblastoma in fine needle aspiration biopsies.Acta Cytol. 2009 Nov-Dec;53(6):679-82. OBJECTIVE: To review the cytologic features of trichoblastoma in order to define criteria that may aid in identification of these tumors at the time of aspirationand allow a definitive diagnosis. STUDY DESIGN: A 58-year-old male presented witha mass lesion on the thigh. On fine needle aspiration, the patient was diagnosed as having a benign skin adnexal tumor. Histology showed the presence of atrichoblastic fibroma, and a retrospective analysis of the cytology wasperformed. RESULTS: The cytologic features of trichoblastoma resembled a cellular fibroadenoma/phyllodes tumor on aspiration, not previously described in theliterature. If the cytomorphology of a skin or subcutaneous aspirate appears to resemble that of a fibroadenoma, the diagnosis of a trichoblastoma should be entertained. Perip