Sea-blue histiocyte syndrome with cutaneous involvement. Case report with ultrastructural findings.

A patient with infiltration of the skin resulting in eyelid swelling and facial nodules was recognized as a case of sea-blue histiocyte syndrome with cutaneous involvement. Typical sea-blue histiocytes were found in the skin and confirmation was provided by electron microscopy. Hepatosplenomegaly, lung infiltrates and bone marrow involvement were the other symptoms. The relationship between sea-blue histiocyte syndrome and adult Niemann-Pick disease is also discussed.