Here, we report an extremely rare case of trichoepithelioma (TE)-a benign epithelial tumor originating from the outer root sheath of a hair follicle-arising in an ovarian mature cystic teratoma (MCT) with fluorodeoxyglucose-positron emission tomography (FDG-PET) findings. A 48-year-old Japanese woman presented to our hospital for her annual follow-up of adenomyosis. Ultrasonography and magnetic...

A case of an interesting previously unreported mixed adnexal tumor of the scalp of a 38 year old man is presented, which was composed of randomly dispersed areas of trichofolliculoma, trichoepithelioma, and pilomatricoma concomitantly. While these lesions are classified under adnexal tumors with differentiation towards hair follicle structures, controversy is present concerning the exact o...

Trichoepitheliomas are trichogenic tumors that can have various clinical morphologies. These tumors are benign and differentiate toward the outer root sheath of the hair follicle. Solitary trichoepitheliomas arise sporadically, in contrast to multiple trichoepitheliomas, which are usually inherited as an autosomal dominant trait or as part of various genetic syndromes. We report a case of an ad...

Solitary trichoepithelioma (TE) is a rare, benign tumor of follicular origin that in certain cases is difficult to differentiate from basal cell carcinoma (BCC). We report the case of an 8-year-old girl with a pale pink, soft lesion on the neck. The clinical image of the lesion was equivocal, while some dermoscopic findings-blue-gray globules and arborizing vessels-could not exclude the presenc...

PURPOSE To describe a case of trichoblsatoma on the eyelid. CASE REPORT A 45-year-old woman presented with a recurring mass on her upper right eyelid. Histopathological examination revealed well-circumscribed tissue composed of an aggregation of basaloid cells. Immunohistochemistry showed positive staining for CD34 and CD10. The patient underwent total excision of the recurrent mass. CONCLU...