组织病理特征真皮内可见多个扩张的毛囊,其中2个毛囊开口于表皮,毛囊口角化过度,自囊壁长出多个次级毛囊。真皮内可见囊性扩张的毛囊结构,有多个基底样细胞条索。组织病理分析图1的病理特征符合毛囊瘤(trichofolliculoma)。毛囊瘤又称为毛囊上皮瘤(follicular epithelioma),是一种毛鞘错构瘤。病变为1个或多个扩大而扭曲的原发性毛囊,多开口于表皮,毛囊口角化过度,原发性毛囊内有角质及多数毛干,周围为放射状排列的次级毛囊。次级毛囊周围有明显的纤维性毛根鞘环绕中央的原发性毛囊,可见到内毛根鞘、外毛根鞘、 Histopathologic features Multiple dilated follicles were visible in the dermis, with two follicles opening in the epidermis and a hyperkeratosis of the follicle with multiple secondary follicles growing from the wall. Cystic dilatation of the hair follicle structure visible in the dermis, there are multiple basal-like cell cord. Histopathological Analysis The pathological features of Figure 1 are consistent with trichofolliculoma. Hair follicle tumor, also known as follicular epithelioma, is a wool sheath hamartoma. Lesion is one or more enlarged and distorted primary hair follicles, more openings in the epidermis, hair follicles hyperkeratosis, primary hair follicles with keratin and most hair follicles, surrounded by radial arrangement of secondary hair follicles. Secondary hair follicles around the obvious fibrous hair sheath around the central primary hair follicles can be seen within the hair root sheath, outer hair root sheath,