Pseudotumor mimicking iliacus muscle abscess following a total hip arthoplasty with metal on metal articulation: A case report.

Rationale: Cases of pseudotumor complicated after THA with metal-on-metal articulation as a bearing surface have been reported. Most of the pseudotumors occurred near or inside the hip joint, and usually have similar features with the infectious condition. We herein report a case of pseudotumor with huge size in the pelvic cavity mimicking features of iliacus muscle abscess.