Pseudoxanthoma elasticum and calcinosis cutis

A 42-year-old white woman presented with clinical and histologic manifestations of both calcinosis cutis and pseudoxanthoma elasticum: discrete milia-like calcifications at the anterior aspect of the neck, a funduscopic examination with classic eye findings, peripheral vascular disease, and a mottled appearance of the skin at the axillae, groin, and lateral aspects of the neck. A younger sibling had similar skin lesions and deteriorating visual acuity. The patient was normocalcemic and normophosphatemic. This case may represent the coincidental occurrence of two rare entities in the same person or may be suggestive of a pattern of dystrophic calcification associated with pseudoxanthoma elasticum.