Question 1700
A 45-year-old male who was previously active in sports, now complains of worsening of right hip pain and is unable to bear weight. Pelvic radiograph demonstrates a lucent bone lesion with periosteal reaction at the right lesser trochanter. Bone scan performed with technetium 99m-methyl diphosphonate (99mTc MDP) demonstrates intense tracer uptake in the right subtrochanteric region. No suspicious foci elsewhere. Which diagnosis should be considered until proven otherwise?
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