Sunday, May 30, 2021

Is the 3D exoscope better than the surgical microscope in parotid surgery: a prospective, randomized single-center study

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Eur Arch Otorhinolaryngol. 2021 May 28. doi: 10.1007/s00405-021-06876-5. Online ahead of print.

ABSTRACT

BACKGROUND: High-definition, three-dimensional (3D) exoscopes are being used to perform a growing number of head and neck surgeries. However, the use of the 3D exoscope in parotid gland surgery has not been previously described. Our initial experience with the VITOM 3D exoscope in the surgical treatment of parotid gland tumors is detailed here.

METHODS: We made a prospective study of patients with benign parotid gland tumors indicated for surgical resection. Between January and December 2018, patients were randomly assigned to undergo surgery assisted with the VITOM 3D system (n = 31) or an operating microscope (n = 40). Visualization quality (greater auricular nerve, digastric muscle, tragal pointer), operating time, conversion rates, and surgical outcomes were compared.

RESULTS: A total of 71 patients underwent superfi cial (n = 18) or total parotidectomy (n = 53). No exoscope-related complications were observed. Five patients undergoing exoscope-guided deep lobe surgery required intraoperative conversion to a microscope. No differences were observed in the subjective quality of intraoperative visualization of key anatomical structures. However, a significantly higher percentage of patients in the exoscope group developed transient facial nerve paralysis (n = 9; 29% vs. n = 4, 10%).

CONCLUSIONS: These findings suggest that the VITOM 3D is a valid visualization tool for parotid gland surgery, comparable to the operating microscope but with higher resolution 3D visualization, an increased degree of freedom of movement, and better ergonomics. However, the high rate of transient nerve palsy, possibly related to decreased depth perception and the brief learning curve, merits further investigation.

PMID:34047839 | DOI:10.1007/s00405-021-06876-5

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