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Necrobiotic palisading suture granulomas simulating rheumatoid nodule
1Department of Pathology, University of Manitoba, Winnipeg, Canada.
The American Journal of Surgical Pathology
|September 1, 1993
Summary
Postoperative suture reactions can mimic rheumatoid nodules. These suture granulomas, featuring necrobiotic granulomas, require inclusion in differential diagnoses for palisading granulomas.
Area of Science:
- Pathology
- Rheumatology
- Surgical Complications
Background:
- Rheumatoid nodules are characteristic subcutaneous manifestations of rheumatoid disease.
- Periarticular granulomatous inflammation is typically associated with chronic inflammatory conditions.
Observation:
- Five patients presented with postoperative periarticular swelling and pain.
- Histopathological examination revealed necrobiotic granulomas with palisading features.
- These granulomas were directly associated with surgical sutures.
Findings:
- The observed granulomas were histologically indistinguishable from rheumatoid nodules.
- No evidence of underlying rheumatic disease was present in the affected patients.
- Suture material was identified as the likely inciting agent for the granulomatous reaction.
Implications:
- Suture granulomas represent a distinct postoperative complication that can mimic rheumatoid nodules.
- Clinicians should consider suture granulomas in the differential diagnosis of palisading granulomas, especially in the periarticular region post-surgery.
- This finding highlights the importance of considering iatrogenic causes for granulomatous inflammation.