title: Probably congenital histiocytosis X with unusual radiographic findings in a 7-week-old infant.
abstract: A 7-week-old infant who probably had congenital histiocytosis X of the Letterer-Siwe type, and who showed mesomelic involvement of the long bones, is reported. Although skeletal changes are common in histiocytosis of the Letterer-Siwe type, very early appearance and localisation of these changes is unusual.
mesh_terms: D001842:Bone and Bones / Q000000981:diagnostic imaging; D006646:Histiocytosis, Langerhans-Cell / Q000151:congenital / Q000000981:diagnostic imaging*; D006801:Humans; D007223:Infant; D008297:Male; D011859:Radiography; D012867:Skin / Q000473:pathology