Figure 5b. Tarsal tunnel syndrome in a 33-year-old man with pain radiating to the plantar aspect of the foot and toes. (a) Axial proton-density-weighted turbo spin-echo MR image (3,500/17) shows a ganglion cyst (*) in the tarsal tunnel. The cyst is responsible for compression of the medial plantar nerve branch (arrows). The lateral plantar nerve is circled. (b) Axial contrast material-enhanced fat-saturated spin-echo T1-weighted MR image (700/12) shows the ganglion cyst in the tarsal tunnel (*) surrounded by soft-tissue contrast enhancement (arrow).