A patient with osteomyelitis and abnormal localization of the changes is presented--left sterno-clavicular joint, the medial parts of the clavicular bone and the first rib, as well as the manubrium sterni. General and target radiography, tomography and chest CT-scan were performed. The reported case is of interest because of the rare localization, the characteristics of the X-ray conduct and the symptomatology in differential and diagnostic aspect.