Rarely encountered, seldom considered: Posterior tibial nerve schwannoma mimicking lumbar radiculopathy

Abstract

There was no history of back pain, and the leg pain was unrelated to posture and activity and even occurred at rest. An MRI of the right leg showed an enhancing tumor probably arising from posterior tibial nerve deep to the tendoachilles and superficial to the deep flexors in the posterior compartment of the leg [Figure 1]. [...]peripheral nerve tumors must be considered in patients who have unresponsive leg pain mimicking lumbar radiculopathy but with normal spinal imaging.