title: Epidermoid carcinoma arising from within an epidermoid inclusion cyst.
abstract: The unusual occurrence of epidermoid carcinoma within an inclusion cyst arising on the forehead of a patient is documented. The importance of any irregular change or clinically abnormal behavior in such a lesion is underscored and the necessity for routine histological examination of all tissue excised is reaffirmed.
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D004814:Epidermal Cyst / Q000150:complications* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D012878:Skin Neoplasms / Q000473:pathology* / Q000601:surgery