An Unusual Cause of Foot Drop: Peroneal Extraneural Ganglion Cyst

Peripheral neuropathies caused by ganglion cysts are quite rare, especially in the lower extremities. The case of a 64-year-old male with a 2-day history of foot drop and tenderness in the region of the left fibular neck is presented. Physical examination and electromyogram findings verified peronea...

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Published inPakistan journal of medical sciences Vol. 32; no. 4; pp. 1047 - 1050
Main Authors Zumrut, Murat, Demirayak, Mehmet, Kucukapan, Ahmet
Format Journal Article
LanguageEnglish
Published Pakistan Knowledge Bylanes 31.08.2016
AsiaNet Pakistan (Pvt) Ltd
Professional Medical Publications
Subjects
Case Report
Ganglion cysts
Ultrasound imaging
Ganglion cyst
Peroneal nerve palsy
Foot drop
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Summary:Peripheral neuropathies caused by ganglion cysts are quite rare, especially in the lower extremities. The case of a 64-year-old male with a 2-day history of foot drop and tenderness in the region of the left fibular neck is presented. Physical examination and electromyogram findings verified peroneal nerve palsy. Ultrasonography showed cystic mass localized proximal of the peroneal muscle structures. Magnetic resonance imaging revealed a cystic-appearing mass around the fibular neck that compressed the common peroneal nerve. Surgical excision and ligation of the cyst pedicle were performed. The pathology reports confirmed the diagnosis of a ganglion cyst. The patient regained full function within two months of the surgery. Early sensory symptoms before foot drop should be considered as an indication of surgical excision to prevent delayed damage. Ligation or electrocoagulation of the cyst pedicle should be a part of surgical procedure to avoid recurrences.
ISSN:1682-024X
1681-715X
DOI:10.12669/pjms.324.9998