An Unusual Presentation of Pilomatrixoma

The document reported a case of an 18-year-old male with a painless lump on his left cheek, initially diagnosed as a sebaceous cyst, but later identified as pilomatrixoma after excision and histopathological examination. Pilomatrixoma is a rare, benign skin lesion originating from hair matrix cells, typically found in young children but also in adults. It appears as skin-colored or purplish lesions, primarily on the head and neck. Diagnosis relies on identifying basophilic and shadow cells, with calcium deposits common in lesions. Treatment involves complete surgical excision, with complications being rare.