[Fibroproliferative trichoepithelioma grows behind the ear: a case report]

Trichoepithelioma is a kind of rare benign tumor of the skin that occurs in direct sunlight and is usually small. Large solitary trichoepithelioma behind the ear is rare. The pathological result of this patient was fibroproliferative trichoepithelioma. This type of tumor is rare and has no specific tumor markers. Diagnosis can be decided based on its histological characteristics. Combined with the appearance and histological characteristics of other types of trichoepithelioma, it can be concluded that this tumor is a special type of connective tissue hyperplastic trichoepithelioma.