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A 58-year-old woman presented with a 1-week history of lower limb bruising. She had a medical history of recurrent metastatic colon cancer with a sigmoid colectomy and complete pelvic exenteration leading to colostomy and urostomy formation. She had malignant sacral mass encroaching on the spinal cord. This caused a left-sided foot drop for which she used an ankle-foot orthosis. She was on cetuximab and had received radiotherapy to the sacral mass 1 month ago. On examination, there were macular ecchymoses with petechiae on the lower limb