found: Work cat.: The official parent's sourcebook on Niemann-Pick disease, c2002:p. 3-4 (Niemann-Pick disease is often considered a synonym or a condition closely related to the following: Lipid histiocytosis, Lipidosis, Sphingomyelin [and] Sphingomyelinase deficiency) p. 10 (patients are currently divided into 4 categories)
found: MESH browser, Mar. 11, 2006:(Niemann-Pick Diseases; Entry terms: Niemann-Pick Disease, Sphingomyelinase Deficiency Disease; Scope note: A group of diseases marked by autosomal recessive inheritance and accumulation of sphingomyelin in cells of the reticuloendothelial system. They are divided into 5 subtypes.)
found: Ninds.nih.gov web site, Apr. 7, 2006(Niemann-Pick disease (NP); refers to a group of inherited metabolic disorders known as the leukodystrophies or lipid storage diseases in which harmful quantities of a fatty substance (lipids) accumulate in the spleen, liver, lungs, bone marrow, and the brain)