Computed Tomography and Magnetic Resonance Imaging Play an Important Role in Determining the Local Degree of Spread of Malignant Tumors in the Organ of Hearing

Introduction. Computed tomography (CT) and magnetic resonance imaging (MRI) are the main methods of radiation diagnostics, which allow to objectively assess the local prevalence of malignant tumors of the organ of hearing and decide on the possibility of surgical intervention.
The purpose of the study was to determine the main indications for surgical intervention, taking into account radiological criteria for lesions of the temporal bone (CT, MRI) in locally advanced skin cancer of the outer ear. Materials and methods. The present study is based on a retro- and prospective analysis of data from a comprehensive examination and treatment of 45 patients with locally advanced skin cancer of the external ear treated from 2021 to 2023.




Results. The prevalence of the tumor process in skin cancer of the external auditory canal in accordance with the staging system for tumor lesions of the structures of the temporal bone, developed in 1990 ( University of Pittsburgh ), taking into account CT and MRI signs of damage to the temporal bone and adjacent anatomical structures, a factor that significantly affects long-term results of treatment (for recurrence- free survival - risk ratio (RR) 4.76, 95% confidence interval (CI) 1, RR 4.25, 96% CI 1.74-10.4, p = 0.0017 for tumor-specific survival, RR 1.90, 94 % CI 1.07-3.58, p = 0.03). Conclusion. CT and MRI are mandatory methods of radiation diagnosis in patients with skin cancer of the external auditory canal.