trichoblastoma (MONDO_0020593, a Monarch Disease Ontology term) is a benign hair follicle neoplasm with trichoblastic differentiation. It usually presents as a solitary papular lesion It most often presents on the head and neck area, but it may develop in any anatomic site containing hair follicles. Because of its benign nature, treatment usually is not required, provided that the diagnosis has been established with certainty. Also known as: Brooke's tumor, Brooke's tumour, trichoepithelioma, trichoepithelioma, benign, trichogenic adnexal tumor, trichogenic adnexal tumour, trichogenic trichoblastoma.