Clinical Impact of Using an Exoscope in En Bloc Subtotal Temporal Bone Resection for Advanced Ear Cancer.

Abstract

To retrospectively evaluate the clinical impact of using an exoscope in en bloc subtotal temporal bone resection (STBR) for advanced ear cancer. A total of 21 patients with lateral skull base malignancies underwent en bloc STBR. The last six patients underwent surgery via a 4K three-dimensional ORBEYE exoscope (Olympus, Tokyo, Japan). We compared the total operation time, duration of the neurosurgical part of the STBR, total blood loss, and presence of intraoperative venous sinus injury between the conventional surgical microscope (SM) group and the ORBEYE (OB) group. There was significantly less blood loss in the OB group (p < 0.05). Fifteen patients in the SM group and zero patients in the OB group experienced venous sinus injury (p < 0.0001). The total operation time and duration of the neurosurgical part of the STBR were not significantly different. The use of ORBEYE in en bloc STBR contributed to surgical safety.