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Schwannoma as an extracranial nerve sheath tumor rarely affects brachial plexus. Due to the fact that brachial plexus schwannomas are a rare entity and due to the brachial plexus anatomic complexity, schwannomas in this region present a challenge for surgeons. We present a case of a 49-year-old female patient with a slow growing painless mass in the right supraclavicular region that was diagnosed as schwannoma and operated at our department. The case is described to remind that in case of supraclavicular tumors, differential diagnosis should take brachial plexus tumors, i.e. schwannomas, in consideration. Extra caution is also required on fine needle aspiration procedures or biopsies of schwannomas due to the possible iatrogenic injury of the nerve and adjacent structures. On operative treatment of schwannoma, complete tumor resection should be achieved while preserving the nerve.