ArticleJournal of orthopaedic case reports2026
Recurrence of a Benign Tumor: The Challenge of a Knee Intra-articular Schwannoma - A Case Report.
Article in Journal of orthopaedic case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Recurrent intra-articular knee schwannoma is an extremely rare occurrence of an already rare tumor, with no previously documented cases in the literature. Case Report: We present the case of a 42-year-old female from South India who underwent surgical excision for a recurrent Hoffa fat pad (HFP) schwannoma 20 years following the initial excision. Clinical examination revealed a long-standing painless swelling that had gradually increased in size over a decade, with the recent onset of pain. Magnetic resonance imaging demonstrated a multilobulated lesion within the HFP. Histopathological examination and immunohistochemical analysis confirmed the diagnosis of a schwannoma. Complete excision via the medial parapatellar approach resulted in relief of symptoms with no evidence of re-recurrence at 3-year follow-up. Conclusion: This case highlights the importance of considering schwannoma as a potential differential diagnosis for HFP tumors and recognizing the possibility of recurrence, thereby facilitating timely diagnosis and effective management.
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