• Oliver Burton Gosling, Alison Emma Hunter, Gray Alexander Dyfan Edwards, and Benjamin Squires.
• Department of Trauma and Orthopaedics, Musgrove Park Hospital, Taunton, UK. oliver.gosling@doctors.org.uk
• BMJ Case Rep. 2013 May 15; 2013.

AbstractA woman in her late 70s presented to the acute general surgical take with a 3-day history of worsening right leg pain and swelling. She had undergone right revision total hip arthroplasty 20 months previously and reported chronic postoperative right thigh pain attributed to a femoral deep venous thrombosis for which she had been warfarinised. On examination, Grey Turner's sign (bruising of the flanks indicating retroperitoneal haemorrhage) was present, as well as a large tender mass in the right iliac fossa and pitting oedema throughout the right lower limb. Urgent CT scan with intravenous contrast revealed a right retroperitoneal haematoma secondary to a right acetabular screw protruding into the right external iliac vein. The patient was successfully managed with warfarin reversal and surgical removal of the relevant acetabular screw. At 2-month follow-up, the patient's symptoms continue to resolve.

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