[Application of endoscopic resection of benign tumor in infratemporal fossa]

L G Yu, L Wang, L J Zhao, S N Zhang, M Chen, L Cai, N Li, Y Jiang
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2020 February 7, 55 (2): 87-93
Objective: To explore the application of endoscopy and clinical effect of endoscopic resection of benign tumor in infratemporal fossa. Methods: The clinical data of 11 patients with benign tumors in infratemporal fossa admitted to the Department of Otorhinolaryngology Head and Neck Surgery and Skull Base Surgery of the Affiliated Hospital of Qingdao University from January 2016 to September 2018 were retrospectively analyzed. There were 6 males and 5 females, with the age ranging from 11 to 63 years old. The main clinical manifestations were pharyngeal foreign body sensation, submaxillary pain, maxillofacial numbness and tongue numbness. Imaging examination showed that the tumor was round and had a clear boundary with the surrounding tissue. All the patients underwent endoscopic surgery. Appropriate surgical approach was selected according to the location of the tumor and its relationship with the internal carotid artery. The endoscopic surgical approaches included trans-oropharyngeal approach in 7 cases, trans-lateral pterygomandibular raphe approach in 1 case and trans-medial pterygomandibular raphe approach in 3 cases. The pathological results, prognosis, complications and relapse of patients were summarized through descriptive statistics. Results: The tumors were completely resected under endoscope in all patients, and there was no significant complication occurred after surgery. The average pain VAS score was 3.1 after surgery and average hospital stay was 5.9 d. The postoperative pathological diagnoses consisted of 6 cases of pleomorphic adenoma, 4 cases of neurilemmoma and 1 case of basal cell adenoma. All patients were followed up regularly from 6 to 39 months without recurrence of tumor. Conclusion: Endoscopic resection of benign tumors in infratemporal fossa has the advantages of minimal damage, rapid recovery, few complications, and definite curative effect, which can be used as an important alternative for surgical treatment of benign tumors.

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