Giant Baker's cyst associated with pigmented villonodular synovitis: surgical management of a rare case

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ID: 328590
2026
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Abstract
This case report presents a rare instance of pigmented villonodular synovitis in conjunction with a large Baker's cyst. A 48-year-old female patient presented with progressive pain, swelling and limited range of motion in the right knee. Magnetic resonance imaging revealed a giant Baker's cyst measuring approximately 11.5 × 8 cm. This was consistent with the presence of multiple lobulated and septated cystic structures. The largest of these measured 7.5 × 5 cm and was located in the popliteal fossa. Proliferative synovial changes suggestive of pigmented villonodular synovitis were also noted in the synovium. Following the failure of conservative treatment, the cyst was excised via a posterior approach and an arthroscopic synovectomy was performed simultaneously. Pathological examination confirmed the diagnoses of a Baker's cyst and pigmented villonodular synovitis. There were no complications postoperatively, and the patient achieved a full range of motion in her knee and was able to resume her daily activities without pain. This case highlights the importance of considering pigmented villonodular synovitis in the diagnostic process for large, complicated Baker's cysts, and demonstrates that surgical excision combined with arthroscopic synovectomy is an effective, safe treatment approach.
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imported_1789675582_6aac483ec73f5 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Erdoğan Suna
Journal Journal of Multidisciplinary Orthopaedic Surgery
Year 2026
DOI
10.64575/v0b89r77
URL
https://jomdos.org/jomdos/article/view/19
Keywords Keywords not found

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