Massive Pelvic Chronic Expanding Hematoma Requiring Differential Diagnosis From Pseudotumor After Revision Total Hip Arthroplasty: A Report of 2 Cases.
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Case Report
We present 2 cases of chronic expanding hematoma (CEH) mimicking pseudotumors after revision total hip arthroplasty (THA) with metal-on-polyethylene bearings. Both patients developed large pelvic masses with imaging findings suggestive of adverse local tissue reactions. CEH was confirmed surgically and histologically. Partial resection and implant revision improved symptoms; 1 case also involved metal debris./r/nThese cases highlight the diagnostic challenge in distinguishing CEH from pseudotumors and emphasize the importance of considering CEH in the differential diagnosis of pelvic masses after THA.
