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Friday, 7 March 2008

Seborrheic keratosis

A 47-year-old woman consulted for this dark pigmented lesion on her neck.

Dermoscopy featured comedo-like openings (yellow arrows) and crypts (red arrow). There was no pigment network and the lesion was sharp demarcated.
These different criteria were in favor of a seborrheic keratosis.

It is important to remind that no single criterion by itself is diagnostic and an accurate and complete examination of the different dermoscopic features is necessary before diagnosing a seborrheic keratosis.