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Figure 10: Guyon canal syndrome. (a) SE T1W axial, (b and c) TSE T2 W axial fat suppressed image and (d) PD VISTA images showing additional muscle belly of adductor pollicis (arrow) arising in the region of mid forearm and getting inserted along with adductor pollicis in palm. There is mild hyperintensity of the ulnar nerve (arrowhead) in the Guyon canal under the belly of accessory adductor pollicis; better appreciated on T2 W than PD VISTA. Pisiform (block arrow) forming the posterior wall of Guyon canal

Figure 10: Guyon canal syndrome. (a) SE T1W axial, (b and c) TSE T2 W axial fat suppressed image and (d) PD VISTA images showing additional muscle belly of adductor pollicis (arrow) arising in the region of mid forearm and getting inserted along with adductor pollicis in palm. There is mild hyperintensity of the ulnar nerve (arrowhead) in the Guyon canal under the belly of accessory adductor pollicis; better appreciated on T2 W than PD VISTA. Pisiform (block arrow) forming the posterior wall of Guyon canal