Saphenous Nerve Schwannoma: A Rare Differential Diagnosis of Knee Pain in Children

Schwannomas are uncommon benign tumors of the peripheral nerves with a low risk of malignant transformation. They rarely affect children, can affect any part of the body but rarely occur in the lower extremity and typically present with a palpable mass, pain or neurological signs. Imaging helps to o...

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Published in:Global pediatric health 2023-01, Vol.10, p.2333794X231156047
Main Authors: Cherraqi, Amine, El Haddad, Siham, Messaoud, Ola, Andour, Hajar, Tbouda, Mohammed, El Ansari, Naoual, KILI, Amina, Hessissen, Laila, Allali, Nazik, Chat, Latifa
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Knee
Pain
Pediatric Oncology
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creator Cherraqi, Amine
El Haddad, Siham
Messaoud, Ola
Andour, Hajar
Tbouda, Mohammed
El Ansari, Naoual
KILI, Amina
Hessissen, Laila
Allali, Nazik
Chat, Latifa
description Schwannomas are uncommon benign tumors of the peripheral nerves with a low risk of malignant transformation. They rarely affect children, can affect any part of the body but rarely occur in the lower extremity and typically present with a palpable mass, pain or neurological signs. Imaging helps to orient the diagnosis and anatomopathological examination helps to confirm it. We report a case of a 12-year-old girl who presented with left knee pain with subcutaneous mass overlying the tibial tuberosity medially. Clinical examination revealed a positive Tinel’s sign. Magnetic resonance imaging (MRI) of the knee was performed, which revealed an encapsulated subcutaneous soft tissue mass overlying the tibial tuberosity medially, eccentric to the course of the infrapatellar branch of the saphenous nerve. The patient was operated with total intracapsular excision of the lesion and the anatomopathological study of the surgical specimen came back in favor of a schwannoma. Postoperatively, the patient showed a good recovery with disappearance of pain and swelling.
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subjects Knee
Pain
Pediatric Oncology
title Saphenous Nerve Schwannoma: A Rare Differential Diagnosis of Knee Pain in Children
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