 | A 20 year old white woman presented to her physician with hip pain and limp for two months. Physical examination revealed ischial tuberosity tenderness. This radiograph of her pelvis revealed a subtle spotty osteolytic lesion in one ischium without fracture or deformity. A core needle biopsy showed small round blue cells compatible with a diagnosis of Ewing’s Sarcoma. Treatment included chemotherapy and radiation. |
 | She did not improve. When we examined her two years later, she had developed more pain and now shortening and limitation of hip motion. These radiographs demonstrate progression of the disease and protusio at the acetabulum. |
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 | Surgical intralesional resection was performed and this section demonstrates the Ewing’s Sarcoma’s cells that survived the chemotherapy and radiation. Note the masses of Ewing’s Sarcoma cells (small round blue cells) including collections in the veins. |
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| Unfortunately, the patient developed wide spread metastases and succumbed several years after initial treatment. |