title: Diastropic dwarfism: a histochemical and ultrastructural study of the endochondral growth plate.
abstract: Chondro-osseous tissue from five patients with diastropic dwarfism was studied by histologic, histochemical, and electron microscopic methods. The major abnormalities observed were: 1) irregular distribution of chondrocytes undergoing degeneration in the resting cartilage; 2) abnormal distribution of collagens in the resting cartilage; 3) a spectrum of fibrous matrix lesions in the resting cartilage which ranged from focal areas of aggregated collagen fibrils to large cystic lesions in which intracartilagenous ossification occurred; and 4) shortened, irregular cellular columns within the growth plate which were occasionally disrupted by matrix lesions extending from the resting cartilage. These alterations in chondro-osseous morphology have not been observed in any of the other skeletal dysplasias examined to date and appear to be pathognomonic for this disorder.
mesh_terms: D000293:Adolescent; D001842:Bone and Bones / Q000473:pathology / Q000648:ultrastructure; D002356:Cartilage / Q000473:pathology* / Q000648:ultrastructure; D002648:Child; D003094:Collagen; D003593:Cytoplasm / Q000648:ultrastructure; D004392:Dwarfism / Q000473:pathology*; D006651:Histocytochemistry; D006801:Humans; D013194:Staining and Labeling
chemical_list: D003094:Collagen