Pelvic pseudotumor: an unusual presentation of an extra-articular granuloma in a well-fixed total hip arthroplasty.
A 76-year-old woman developed a pelvic mass and abdominal pain 12 years after cementless total hip arthroplasty. The mass was a cystic granuloma that communicated with the hip joint via a soft tissue herniation under the inguinal ligament. There was no acetabular lysis or defects. The shell and femoral component were well fixed, the polyethylene was worn, and a liner exchange was undertaken. The cyst was debrided, and follow-up computed tomography demonstrated resolution of the granuloma and no recurrence of the cyst. Removal of the source of the particle wear debris via liner exchange or revision surgery combined with cyst debridement via a single incision is recommended.
Leigh
Warren
W
Department of Orthopaedic Surgery, University of Otago and Dunedin Public Hospital, Dunedin, New Zealand.
O'Grady
Paul
P
Lawson
Emma M
EM
Hung
Noelyn Anne
NA
Theis
Jean-Claude
JC
Matheson
John
J
D000368:Aged; D019644:Arthroplasty, Replacement, Hip; D003646:Debridement; D005260:Female; D006099:Granuloma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D010386:Pelvic Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D011183:Postoperative Complications; D014057:Tomography, X-Ray Computed