skin tumor that grows rapidly (especially in older people) and resembles a carcinoma but does not spread; it usually disappears spontaneously, often leaving a scar

a false skin cancer that looks like a little volcano

a rapidly evolving tumor of the skin with a "volcano-like" appearance, rising sharply from the surrounding skin as a smooth edge tumor

a rapidly evolving tumor of the skin with a "volcano-like" appearance Skin Care Guide

a rapidly expanding nodule that develops a central, keratotic core (see photo below)

a skin growth that is round, firm and usually flesh-colored with a scaly crater at the center

A rapidly-growing, locally-invasive tumor of the skin which usually resolves spontaneously if not removed for diagnostic or cosmetic purposes.

A round, rapidly growing tumor that appears mainly on sun-exposed skin.

mostly benign, rapidly growing skin tumor that regresses spontaneously

A benign endophytic epithelial growth appearing as a wee circumscribed keratin-filled crateronsun-exposed skin; ofen mistaken for squamous cell carcinoma.

A benign (noncancerous), rapidly growing skin tumor that usually occurs on sun-exposed areas of the skin and that can go away without treatment.

Keratoacanthoma Keratoacanthoma (KA) is a relatively common, benign, epithelial tumor that was previously considered to be a variant of squamous cell carcinoma. The etiology is unknown. No human papillomavirus-DNA sequences were detected in lesions by polymerase chain reaction.