Journal of orthopaedic case reports · 2026
Anteromedial Knee Pain Unmasked: Schwannoma of the Infrapatellar Branch of the Saphenous Nerve - A Rare Case Report.
Клинический случайСтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
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История · было → стало
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Haider Hunaid, Bava Surendar Singh, Phunde Rajendra, Chandra Pujith, Sherke Nihar, Jinturkar Samyak
Аннотация
INTRODUCTION: Schwannomas are benign, encapsulated peripheral nerve sheath tumors derived from Schwann cells. They are rarely seen around the knee, accounting for <1% of all schwannomas, and can mimic other benign swellings such as ganglion cysts or bursae.
CASE REPORT: We report a 32-year-old female who presented with anteromedial right knee pain and a tender swelling for 2 years. Radiographs were normal, and a provisional diagnosis of a ganglion cyst was made. The lesion was excised under local anesthesia through a vertical incision and found to be a well-encapsulated mass measuring approximately 1 × 1 × 1 cm, located superficial to the joint capsule. Based on its location, the swelling was suspected to arise from a branch of the saphenous nerve, most likely the infrapatellar branch. Histopathological examination confirmed the diagnosis of schwannoma.
CONCLUSION: Schwannomas, though benign and uncommon around the knee, should be included in the differential diagnosis of localized knee pain with soft-tissue swelling and normal radiographs.
CASE REPORT: We report a 32-year-old female who presented with anteromedial right knee pain and a tender swelling for 2 years. Radiographs were normal, and a provisional diagnosis of a ganglion cyst was made. The lesion was excised under local anesthesia through a vertical incision and found to be a well-encapsulated mass measuring approximately 1 × 1 × 1 cm, located superficial to the joint capsule. Based on its location, the swelling was suspected to arise from a branch of the saphenous nerve, most likely the infrapatellar branch. Histopathological examination confirmed the diagnosis of schwannoma.
CONCLUSION: Schwannomas, though benign and uncommon around the knee, should be included in the differential diagnosis of localized knee pain with soft-tissue swelling and normal radiographs.