Fabry's disease. Primary diagnosis by electron microscopy.

Fabry's disease is a lipid storage disease found in children and adults. The lipid is stored as a myelin-figure-like whorl of membranes in endothelial and smooth muscle cells, myocardium, fibroblasts, and epithelial cells of the glomerulus. The lipid deposits are identifiable by light microscopy, but are much easier to demonstrate by electron microscopy. The disease leads to vascular insufficiency because of narrowing and thrombosis of arteries and arterioles. The resultant vascular insufficiency leads to peripheral neuritis, myocardial infarction, peripheral infarction and cerebral infarction. Corneal clouding due to lipid deposits is also seen. Renal involvement is widespread, but renal failure occurs late.