Becker's melanosis: associated abnormalities.

Becker's melanosis is a distinct clinical entity. We report herein two cases with extensive lesions accompanied by subjacent and distant soft tissue and bony abnormalities. Review of the world's literature reveals several additional cases of structural abnormalities associated with Becker's melanosis. Rather than just a dermatologic curiosity, Becker's melanosis may be a marker for underlying structural anomalies.