Keratoacanthoma

A rapidly growing tumor with a central keratin mass that opens on the skin surface, which can sometimes be expressed (Fig. 2.24). The tumor may resolve spontaneously, forming a small sunken scar. Differential diagnosis should exclude a basal cell carcinoma (see that section); the margin of a keratoacanthoma is characteristically avascular. Likewise, a squamous cell carcinoma can only be excluded by a biopsy.

— Molluscum contagiosum.

— Molluscum contagiosum.

Fig. 2.22 The pinhead-sized molluscum lesions have typical central depres-

Fig. 2.23 The yellowish brown cutaneous protrusions consist of keratin. They frequently (25% of all cases) develop into a malignant squamous cell carcinoma in later years if they are not surgically removed.

Fig. 2.24 The rapidly growing benign tumor has a central keratin mass that opens on the skin surface.

How To Reduce Acne Scarring

How To Reduce Acne Scarring

Acne is a name that is famous in its own right, but for all of the wrong reasons. Most teenagers know, and dread, the very word, as it so prevalently wrecks havoc on their faces throughout their adolescent years.

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