الفهرس 
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Abstract
The aim of his study was preoperative evaluation of middle ear cholesteatoma with MDCT to help in detection of extension and complications of the disease to help the surgeons to choose the proper surgical approach and to be prepared for the possibility of complications. This study included 30 patients who were presented to the department of (ENT) with chronic suppurative otitis media and referred to Radiology Department at Tanta University Hospital for preoperative evaluation by MDCT. All the studied patients were subjected to complete history taking, Clinical examination, preoperative audiological examination, Preoperative MDCT examination of the temporal bone (both coronal and axial views) and surgical intervention of the disease. Correlation between pre-operative and intra-operative findings was done and intraoperative finding was taken as a gold standard. Statistical analysis was done for the results and histopathologic examination of surgical excised masses was obtained to confirm diagnosis. The study was conducted on 30 patients who included 17 female and 13 male. The patients ages ranged from 5 to 65 years with a mean age of 35 years. The most affected age group was from 25 to 35 years old with a percentage of 40%. Hearing loss was the commonest symptom seen in 100 % of patients while 29 patients were presented with ear discharge which was the second most common symptom with a percentage of 96.7%. Tinnitus, vertigo and facial nerve paralysis were presented in 2 patients for each with percentage of 6.7%. By clinical examination cholesteatoma mass was seen in 100% of patients and tympanic membrane perforation was found in 29 patients with percentage of 96.7%.