Cystic lesions of peripheral nerves: Are we missing the diagnosis of the intraneural ganglion cyst?

Figure 15 Serial, coronal (images A-C), and axial (images D-E), proton density fat suppressed sections show a well-defined oval cystic lesion at the posterolateral aspect of upper fibula along the expected course of common peroneal nerve which does not communicate within the proximal tibiofibular joint. Mild denervation edema is seen in the anterior compartment muscles (star). This is a case of cystic schwannoma involving the CPN. T: Tibia; F: Fibula; Fe: Femur; CPN: Common peroneal nerve.