JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Angiokeratoma corporis diffusum and arteriovenous fistulas with dominant transmission in the absence of metabolic disorders.

BACKGROUND: A three-generation family with members affected by angiokeratoma corporis diffusum (ACD) and arteriovenous fistulas of the legs is described. Our purpose was to investigate possible lysosomal storage defects previously described in association with ACD.

OBJECTIVE: Results of physical examination of both affected and unaffected family members were otherwise normal as was the life span. The inheritance pattern of both ACD and arteriovenous fistula traits was autosomal dominant, with variable expressivity and incomplete penetrance. Microscopic examination of ACD lesions showed dilated capillaries without vacuolation of cells. Ultrastructural studies failed to reveal lysosomal abnormalities. Normal levels of alpha-galactosidase, beta-galactosidase, alpha-fucosidase, and alpha-sialidase were detected in peripheral blood leukocytes and skin fibroblasts.

CONCLUSIONS: The association of autosomal dominant ACD and arteriovenous fistulas might represent a novel syndrome. However, pathogenesis of these lesions remains unknown.

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