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

Figure 13 Images A-F show serial, T2-weighted fat suppressed axial sections of the proximal leg and demonstrate a large multilobulated globular extra-neural ganglion cyst (block arrows). The ENGC is antero-lateral to the proximal fibula and indenting the peroneus longus muscle anteriorly (A-C). The CPN (open arrows) lies posterior to the cyst but is seen separate from it. The tail of the cyst (arrows in D-F) extends superiorly and communicates with the superior aspect of the PTF joint. PTF: Proximal tibiofibular; CPN: Common peroneal nerve; ENGC: Extraneural ganglion cyst; T: Tibia; F: Fibula.