Fig. 1
From: Predictive factors of tinnitus after vestibular schwannoma surgery: a case-control study
Changes of tinnitus in patients with vestibular schwannoma after surgery. Of the 173 patients, 129 patients had tinnitus and 44 patients had no tinnitus before surgery. After surgery, tinnitus resolved in 16 cases, improved in 38 cases, unchanged in 37 cases, worsened in 38 cases, and appeared in 8 cases, and 36 cases still had no tinnitus. Tinnitus+, patients with preoperative tinnitus; Tinnitus−, patients without preoperative tinnitus; R, resolved; I, improved; U, unchanged; W, worsened; N, no tinnitus; A, appeared