Enchondroma and chondrosarcoma of bone: clinical, radiologic, and histologic differentiation.

(OBQ12.101) A 56-year-old male with a history of prostate cancer presents to your clinic complaining of bilateral foot pain (right greater than left) that he relates to his chronic bunion and claw toe deformities. He denies new trauma, fevers, or weight loss. He says that he is able to ambulate but has had progressively increased pain in the great and lesser toes of both feet, with progressive difficulty in wearing shoes. During his radiographic evaluation a lesion is found in the right tibia which is shown in Figure A. What is the next most appropriate step in management of the tibial lesion?

(OBQ09.263) A 70-year-old woman falls and presents with pelvic pain. Physical exam shows she is able to walk without difficulty. Radiographs of the pelvis and hip are shown in Figure A, B, and C. A biopsy of the lesion in the proximal femur is shown in Figure D. What is the next best step in management of the femoral lesion?