GIANT RHEUMATOID PSEUDOCYST IN THE ACETABULUM

A case report of giant extra-articular intraosseous pseudocyst in the acetabulum in a patient with rheumatoid arthritis is presented. A 36-y ear-old male patient with sero positive rheumatoid arthritis presented with hip signs and symptoms, and X-ray showed a 5 x 3.5 x 2 cm giant intraosseous acetabular cyst The lesion was treated by open surgery, t horough curettage and cortico cancellous bone grafting. Six months fol lowing surgery the patient was painfree and mobile. We believe this is the first report of a giant extra-articular intraosseous pseudocyst i n the acetabulum and we conclude from our experience that the first li ne of treatment should be curettage and grafting.