Tumors of the Follicular Infundibulum
June 2019
TLDR Benign tumors from hair follicles can look like other skin cancers but have distinct features under dermoscopy.
The document discussed two types of benign tumors of follicular origin: the tumor of the follicular infundibulum, which originates from the isthmic part of the hair follicle, and the inverted follicular keratosis, which derives directly from the follicular infundibulum. These tumors typically appeared as solitary papules on the head and neck of elderly patients and could be mistaken for other skin tumors like basal cell and squamous cell carcinomas. Dermoscopic examination of inverted follicular keratosis revealed specific features such as scales, white structureless areas, and hairpin vessels. The document also described the dermoscopic appearance of two cases of the tumor of the follicular infundibulum, which had not been previously documented.
