A Small Glomus Tympanicum Tumor Resected by Minimally Invasive Transcanal Endoscopic Approach

Figure 1

(a) A red mass was observed under the anterior quadrant of the tympanic membrane. (b) Pure-tone audiometry. The black and gray lines show the preoperative and postoperative hearing levels, respectively, in the right ear. After the surgery, the hearing level was not reduced and a normal hearing level was preserved. (c, d) A high-resolution computed tomography scan ((c) axial view and (d) coronal view) shows a mass on the promontory. (e) Postoperative tympanic membrane.

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