하순에 발생한 각화극 세포증

Keratoacanthoma of the lower lip

Keratoacanthoma is a rapidly growing cutaneous neoplasm that resembles squamous cell carcinoma morphologically but behaves in a biologically benign manner. The lesion is uncommon in dark-skinned people and Orientals and is largely confined to Caucasians, Solitary keratoacanthoma is seen most frequently on exposed areas of the hands, wrists, and forearms. Rarely reported sites include the oral mucosa and conjunctiva. Keratoacanthoma found on the lips are nearly always in contact with the vermilion border and adjacent skin. A case of keratoacanthoma of the lip in a woman is presented with a review of the literature.