Dr. Guy C. Hebert: This patient is a 10-year-old white girl admitted because of an aching pain in the left elbow of several weeks' duration. The patient first noted this pain after exercising at school. It was believed to be due to muscle strain but when it persisted, she was taken to her family physician and roentgenograms were obtained. There had been no previous bone pain, fracture, or trauma to this area. The patient's history and family history were non-contributory. The results of physical examination were normal except for mild tenderness to deep palpation in the medial forearm over the left ulna at its proximal extremity. There was no palpable mass. Findings from laboratory studies were within normal limits.
Dr. Laurence L. Robbins: Dr. McNeill, would you please discuss this case?Dr. J. Malcolm McNeill: The roentgenograms (Figure) show an expanded lesion in the proximal ulna that has a
Guzzetta JA. An Expansile Lesion of the Proximal Ulna. JAMA. 1970;213(3):452–453. doi:10.1001/jama.1970.03170290048009
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