Pelvic metastases from breast cancer
Non traumatic bilateral pelvic and hip pain.
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Numerous lucent lesions through the proximal femora (left more so than right). Lytic lesion in the left inferior pubic ramus eroding the obturator cortex. No pathological fracture evident. Acetabular osteophytosis.
The patient had a mastectomy 3 years prior for ductal carcinoma. Axillary nodal dissection was positive for nodal disease. Subsequent bone scan showed a few other lesions in the vertebrae and left clavicle.