Juvenile elastoma (Weidman). An ultrastructural study.

Two cases of juvenile elastoma (nevus elasticus in disseminated tumors) were histologically and ultrastructurally investigated. The predominant components of this disseminated dysembryoplasia are abnormal elastic fibers. Both cases showed numerous large elastic fibers with an abundant background matrix. The elastic microfibrils were replaced by granular material. In one case, most of the abnormal elastic units remained isolated without forming elastic fibers.