SCC Hyperostosis Medcyclopedia

Description: Sternocostoclavicular hyperostosis a disorder of adults characterized by distinctive bone overgrowth and soft tissue ossification of the clavicle, sternum and anterior portions of the ribs, usually present bilaterally. SAPHO syndrome is a name used collectively for a group of disorders whose most common manifestation is osteitis of the anterior chest wall, including sternocostoclavicular hyperostosis. Many patients also have pustulosis palmaris et plantaris. The bone overgrowth may lead to occlusion of the subclavian veins. On radiographs, hyperostosis is noted to involve the sternum, clavicle and upper ribs; additional changes in the vertebral column include spinal outgrowths that resemble those of ankylosing spondylitis, diffuse idiopathic skeletal hyperostosis or psoriatic spondylitis. Ligament ossification also may be present.