Case Letter
Pedunculated Scrotal Nodule in an Elderly Male: A Rare Presentation of Trichoblastoma
Trichoblastoma is a rare benign tumor with differentiation toward the primitive hair follicle. Trichoblastomas show no gender predilection and...
Conclusion
Trichoblastomas are uncommon tumors of germinative hair bulb origin that can have several histologic variants. A well-documented subtype of trichoblastoma characterized by melanin deposits within and around tumor nests has been identified and classified as a pigmented trichoblastoma. Four cases of melanotrichoblastoma have been reported and represent a variant of a pigmented trichoblastoma characterized by the presence of melanocytes within the lesion. Whether they represent a true variant is of some debate and additional study is required. Although these tumors are exceedingly rare, it is important for the clinician and pathologist to be aware of this entity to prevent confusion with other similarly appearing follicular lesions, most notably BCCs, because of the difference in treatment and follow-up.
