Familial occurrence of Letterer-Siwe disease.
D003241:Consanguinity; D005260:Female; D005808:Genes, Recessive; D006646:Histiocytosis, Langerhans-Cell / Q000235:genetics*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D010375:Pedigree