title: Fibrochondrogenesis: radiologic and histologic studies.
abstract: Fibrochondrogenesis is a distinct, neonatally lethal, short-limb skeletal dysplasia which was first described in a single patient in 1978. We report the radiographic and morphologic studies of 2 additional unrelated stillborn infants with fibrochondrogenesis. This syndrome has distinct radiographic and chondro-osseous morphologic defects different from those seen in the other known skeletal dysplasias. The long bones are short and dumbbell-shaped with metaphyseal flare. The spine is platyspondylic with superior-inferior clefting defects, and the ribs are short and distally cupped. The growth-plate cartilage is grossly disorganized and has a densely fibrous collagenous matrix when examined by light and electron microscopy. Light, transmission, and scanning electron microscopy shows diaphyseal and metaphyseal trabecular bone to be normal.
mesh_terms: D000015:Abnormalities, Multiple / Q000473:pathology; D005260:Female; D006132:Growth Plate / Q000473:pathology; D006801:Humans; D007231:Infant, Newborn; D010009:Osteochondrodysplasias / Q000000981:diagnostic imaging* / Q000235:genetics / Q000473:pathology; D011859:Radiography; D012272:Ribs / Q000002:abnormalities; D013131:Spine / Q000002:abnormalities