title: Sternocostoclavicular hyperostosis. Radiological and pathological study of a specimen with ununited clavicular fracture.
abstract: Anatomico-radiological study of a sternocostoclavicular mass taken post-mortem from a man whose clinical history had shown bilateral sternocostoclavicular hyperostosis (SCCH) with plantar pustulosis for 27 years. The clavicle showed an ununited fracture attributable to a trauma sustained five years earlier. Both clavicular segments showed active remodelling with intraosseous granulation tissue and periosteal metaplastic ossification. The sternocostoclavicular region was fused in a bony block in which there were no signs of remodelling activity. The first rib and the distal extremity of the clavicle were histologically normal. These observations support the conclusions of a previous study of another case of SCCH. The condition might be due to a bone infection caused by an--as yet--unknown germ. Bone remodelling would explain the periosteal hyperostosis and the fragility of the underlying bone. Furthermore, the possibility that the condition might also be a joint disease related to the group of rheumatic diseases called spondyloarthropathies should be considered.
mesh_terms: D000328:Adult; D001847:Bone Diseases / Q000000981:diagnostic imaging / Q000473:pathology*; D002968:Clavicle / Q000000981:diagnostic imaging / Q000293:injuries* / Q000473:pathology; D005500:Follow-Up Studies; D050723:Fractures, Bone / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D008297:Male; D011859:Radiography; D012272:Ribs / Q000000981:diagnostic imaging / Q000473:pathology*; D013249:Sternum / Q000000981:diagnostic imaging / Q000473:pathology*; D014945:Wound Healing