trichoblastoma trichoepithelioma, benign trichoblastoma Brooke's tumour MONDO:0020593 UMLS:C0349658 MEDGEN:138112 Brooke's tumor trichogenic adnexal tumor trichoepithelioma icd11.foundation:1414797713 ICDO:8100/0 trichogenic adnexal tumour trichogenic trichoblastoma 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. NCIT:C27132 benign epithelial skin neoplasm