Case Report| Volume 49, ISSUE 4, P400.e1-400.e4, July 2010

Intraneural Ganglion of the Superficial Peroneal Nerve: A Case Report


      Ganglia affecting the peripheral nerves of the foot and ankle are rare. The most frequent location of occurrence is the common peroneal nerve at the level of the fibular neck. We report the case of an intraneural ganglion of the superficial peroneal nerve and its branches. Although there have been many previous reports of intraneural ganglion involvement with the common peroneal nerve, deep peroneal nerve, sural nerve, and the posterior tibial nerve, to our knowledge, this is the first reported occurrence of an intraneural ganglion distinctly localized to the superficial peroneal nerve and its branches. The presumptive diagnosis was made preoperatively using magnetic resonance imaging, and then confirmed postoperatively by pathologic examination. Despite the use of operative magnification, it was impossible to remove all of the cyst elements within the nerve trunk, because the nerve fascicles were intimately intertwined. Therefore, complete resection of the common trunk of the superficial peroneal nerve and its terminal branches was performed, and the proximal stump was buried in a hole in the distal fibula. Two years after the surgery, the patient was pain free and asymptomatic except for cutaneous anesthesia in the distribution of the superficial peroneal nerve.

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