PMC5247282_01
Preoperative MRI displayed an intraneural ganglion cyst related to the ulnar nerve.
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However, no articular branch associated with joint was interpreted around the mass (Fig. 1).
PMC5247282_02
The intraneural ganglion cyst arising from the superficial branch of the ulnar nerve.
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After achieving enough exposure, the parent ulnar nerve and its superficial branch was identified (Fig. 2).
PMC5247282_03
PMC5247282_04