الفهرس 
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Abstract
Tumours of the salivary glands are relatively rare, comprising slightly less than 3 per cent of all head and neck neoplasms. Their relative infrequency and tendency to histological variability continue to contribute to a grave lack of hard data on which to pursue an ‘evidence-based approach’ to the subject. A review of literature including epidemiology of parotid tumors, anatomy of the parotid gland, pathology of different parotid tumors, different preoperative investigational methods and a detailed review of parotid surgery aspects was done to provide a matrix for the study. A retrospective – prospective case series study including all the patients who presented with parotid tumors to NCI-Cairo University in the period from January 2004 to December 2008 have been conducted, data was retrieved from the pathology and statistics departments as well as the inpatient files for new cases. This study was mainly considered with studying the different criteria in parotid neoplasms in the patients presenting to NCI – Egypt and comparing them to the findings abroad in a trial to know the points of variation and the reasons for that difference hoping to present a better management for patients with parotid tumors. The median age for benign tumors was around 39 years, which is less than the average abroad, while the mean age for malignant cases exactly equals the average outside (47 years). Generally, Parotid Tumours an updated review & A Case Series Study in NCI , S. Abdalkarim, MB,Bch, NCI, Cairo.2008 9 females are more affected by parotid neoplasms, but our study shows a significant male predominance in malignant tumors. There has been a longer duration of symptoms at presentation in our study (10 months)compared to 5 months in similar studies abroad. Pain was the main presenting symptom in only 25 cases (%, 14 of which turned out to have malignant tumors).Facial palsy was the main presenting symptom of only one case that turned out to be benign, one third of the presenting patients to NCI had some sort of previous parotidectomy (32.8%), most radiological preoperative assessment was done using CT scan, for which the best statistical results were obtained (P value of 0.005). Facial nerve was preserved in most of the cases (82.9%), it was intentionally sacrificed in 25 cases where immediate reconstruction was reported in only two cases, Sternomastoid muscle reconstruction was used in reconstruction of small defects, mostly in benign tumors.Other types of reconstruction, namely the myocutaneous flaps (10 cases in our series) were used in reconstruction of major defects resulting from resection of large malignant tumors. The flaps used were either Pectoralis major or Temporalis flaps. SMAS flaps and free flaps were not reported in the surveyed registry. Pleomorphic adenomas were the most common post-operative pathological finding, followed by warthin’s tumor, then mucoepidermoid carcinoma.