Parosteal sarcoma humerus LSBU

Description: Radiology case 415-3222 Female patient, 18 years old with discomfort in the left shoulder.
There is a dense lesion in the upper metaphysis of the humerus, which is wrapped around the bone. In part, the view shows a lucent line, 'separating' the lesion from the underlying bone. There is some bone destruction on the infero-lateral side of the dense tumour with a suggestion of periosteal elevation. Other smaller poorly defined zones are visible in the diaphysis of the humerus. The oblique view is not in full-inspiration and pulmonary involvement cannot be excluded.