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Solitary lesion of femur.

Dr. Richard M. Heller: This is the first admission to Massachusetts General Hospital for a 20-year-old white man who complained of pain in the left hip for six months. The findings of physical examination were normal, and results of the laboratory tests were completely normal. Roentgenograms of the hip were done at the time of admission. (Fig 1). Discussion Dr. Laurence L. Robbins: Dr. Otto, would you comment on this case, please. Dr. William J. Otto: There is a solitary lesion in the left proximal femur involving the greater trochanter and intertrochanteric area extending into the femoral neck. The cortex appears intact, and there is no soft-tissue mass visible. There are a few sclerotic lines crossing the lesion which seem to be true septa rather than scalloping of the inner cortex. The margins of the lesion are not very sharp. There is no sclerosis in the surrounding bone and no