The symptomatology of suprascapular neuropathy is variable, depending principally on the etiology and location of the lesion. Among them, suprascapular nerve entrapment with isolated paralysis of the infraspinatus muscle is uncommon. We report a 27-year-old man presenting with right arm weakness. Based on the electrophysiologic and imaging findings, suprascapular neuropathy at the spinoglenoid notch due to cystic mass lesion was diagnosed.
