Analysis of Modified Radical Mastoidectomies Cavity Results in a Tertiary Care Hospital

Background: Discharging Modified Radical Mastoidectomy cavity is a troublesome and frustrating problem both for the operating surgeon and patient. Etiology of discharging MRM cavity is multifactorial. Knowing and addressing the etiological factors at the time of surgery is important to provide dry and safe ear to the patient. Objective: To evaluate the post-operative status of mastoid cavity after modified radical mastoidectomy.Material and Methods: This prospective Cross sectional study was conducted among 450 patients who came for open mastoidectomies in ENT Department, Saidu Group of Teaching Hospitals, Saidu Sharif Swat, Khyber Pakhtunkhwa, Pakistan. The study duration was from January 16, 2012 to December 09, 2019. Patients were postoperatively followed according to protocol and evaluated for residual cholestetoma and post mastoidectomy cavity status. The evaluation was conducted with endoscope and microscope. Data was obtained on pro-forma and SPSS 22 was used for analysis.Results: Out of 450 patients 109 (24.3%) were having recurrent persistent discharging mastoid cavities and 341 (75.7%) were having dry mastoid cavity. Multiple factors contributed to be the cause of discharging mastoid cavity with high facial ridge (89.9%) being the most common. More than one etiological factor in individual patients were also identified to be the cause for wet mastoid cavities.Conclusion: We concluded that complete exenteration of cholestetoma with lowered facial ridge, adequate meatoplasty and regular follow up is necessary to avoid post-operative mastoid cavity problems.Key words: Modified Radical Mastoidectomy, Mastoid Cavity, Cholestetoma.