Geist Ryan S., Crane Jonathan S.
Campbell University Dermatology Residency Program
Sampson Regional Med Ctr / Campbell Univ
Trichofolliculoma is a cutaneous adnexal tumor derived from the hair follicle. Trichofolliculomas, also known as folliculomas, are a category of benign hair follicle tumors that comprise a diverse group of uncommon neoplasms. The specific type and extent of hair follicle differentiation distinguish each neoplasm. Several examples of more widely documented benign hair follicle tumors include trichilemmoma, trichoadenoma, dilated pore of Winer, and trichoblastoma. Trichofolliculomas are considered hamartomatous neoplasms rather than neoplasms of a malignant nature. Trichofolliculomas are generally characterized by well-differentiated cells without atypical features, which display abnormal tissue arrangement. More specifically, trichofolliculomas manifest as a cystic dilation of 1 or more infundibula, characterized by a centralized opening to the skin surface, through which 1 or more hair shafts pass.
毛发滤泡瘤是一种源自毛囊的皮肤附属器肿瘤。毛发滤泡瘤，有时也称为滤泡瘤，是一类良性毛囊肿瘤，包括多种罕见的肿瘤。每种肿瘤在毛囊分化的具体类型和程度上有所不同。一些记录更为广泛的良性毛囊肿瘤的例子包括外毛根鞘瘤、毛发腺瘤、维纳扩张孔和毛母细胞瘤。毛发滤泡瘤被认为是错构瘤性肿瘤而非癌性肿瘤。毛发滤泡瘤通常具有细胞分化良好、无显示异常组织排列的非典型特征。更具体地说，毛发滤泡瘤表现为一个或多个漏斗部的囊性扩张，有一个通向皮肤表面的中央开口，一根或多根毛干从中穿过。
