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Anais Brasileiros de Dermatologia

Print version ISSN 0365-0596On-line version ISSN 1806-4841


BICCA, Eduardo de Barros Coelho et al. Classical Ehlers-Danlos syndrome: clinical, Histological and ultrastructural aspects. An. Bras. Dermatol. [online]. 2011, vol.86, n.4, suppl.1, pp.164-167. ISSN 0365-0596.

A 12-year-old boy with difficulty in wound healing and scars of unusual appearance was examined. Thin, shiny and protruding skin, characterizing pseudotumoral lesions, was observed on his knees and elbows. Loose joints and increased skin elasticity were also observed. Light microscopy showed rare collagen bundles and loosely dispersed collagen fibers. Irregularly distributed elastic tissue was observed, and transmission electron microscopy revealed disorganized collagen fibers. In cross sections under high magnifications, fibers of varying diameters could be seen, as well as an irregular fiber outline. Scanning electron microscopy of the dermis showed disorganized collagen fibers, which were rarely arranged in bundles. Isolated and crossed-over fibers were also found

Keywords : Collagen type V; Ehlers-Danlos syndrome; Microscopy, electron, scanning; Microscopy, electron, scanning transmission.

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