A Rare Cutaneous Hamartomatous Adnexal Tumor: Trichofolliculoma.

Introduction: Trichofolliculoma is a very rare, benign hamartomatous skin adnexal tumor originating from the hair follicle. The tumor which presents as a papule or nodule is usually observed on the scalp and face.

Case presentation: We report the case of a 49-year-old female who presented with a solitary papule on the nose. The lesion which was observed macroscopically and dermoscopically compatible with trichofolliculoma was completely removed by punch biopsy. The diagnosis of trichofolliculoma was confirmed histopathologically, and no recurrence was observed in the follow-up.

Conclusion: Trichofolliculomas can macroscopically mimic some skin cancers such as basal cell carcinoma and sebaceous carcinoma. Awareness of its typical clinical and dermoscopic features facilitates diagnosis and prevents aggressive surgical intervention.