Fucosidosis with angiokeratoma. Immunohistochemical & electronmicroscopic study of a new case and literature review.

Fucosidosis is a rare lysosomal storage disease due to alpha-L-fucosidase deficiency. It presents clinically with neurological, skeletal, and cutaneous findings, including mainly angiokeratoma corporis diffusum. Electronmicroscopic examination reveals characteristic electron-lucent cytoplasmic vacuolization present in several cell types of the skin and other tissues. We present here a new patient suffering from fucosidosis with angiokeratoma, whose normal and diseased skin was studied by lightmicroscopy and electronmicroscopy. The salient clinicopathological features of this disease are briefly reviewed.