الفهرس 
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Abstract
This is a retrospective study included 3625 patients admitted to the ENT Department in Assiut University Hospital from January 1985 to January 2006. ENT malignancies were diagnosed histopathologically in 43.6%.
Of them laryngeal tumours represented 70.4% of malignant ENT tumours. The most common laryngeal tumours were squamous cell carcinoma representing 95.8%.
Transitional cell carcinoma represented 0.8% and adenocarcinoma represented 0.7% of laryngeal malignancies. In our study laryngeal diseases were more common among males and occurred more frequently in old age.
Nasopharyngeal malignancies represented 55.4% of pharyngeal malignancies. Squamous cell carcinoma represented 27%) of patients with pharyngeal malignancies. Lymphoma represented 36.6% of patients with nasopharyngeal malignancies while, adenocarcinoma represented 9.8%. Chronic non specific inflammation represented 23.9% of patients with nasopharyngeal diseases. Nasopharyngeal diseases were more common among males 70.3%.
Oropharyngeal malignancies represented 7.7% of patients with pharyngeal malignancies. Squamous cell carcinoma represented 64.7% of patients with oropharyngeal malignancies. Lymphoma represented 36.6% of patients with nasopharyngeal malignancies. While, adenocarcinoma represented 16% of them.
Hypopharyngeal malignancies represented 36.9% of patients with pharyngeal malignancies. Squamous cell carcinoma represented 95.1% of patients with hypopharyngeal malignancies. Lymphoma represented 2.4% of patients with hypopharyngeal malignancies. Chronic non specific inflammation represent 3.1% of patients with hypopharyngeal diseases.
Oral malignancies represented 7% of patients with ENT malignancies. Squamous cell carcinoma represented 41.4% of patients with oral malignancies. Lymphoma represented 29.7% of patients with oral malignancies. Adenocarcinoma represented 22.5% of patients with oral malignancies. Chronic non specific inflammation represented 18.6% of patients with oral diseases. The mean of age of patients with oral diseases was 38.06±19.11.
Tonsillar malignancies represented 2.5% of patients with ENT malignancies. Malignant lymphoma represented 85% of patients with tonsillar malignancies. Squamous cell carcinoma represented 7.3% of patients with tonsillar neoplasms. Chronic non specific inflammation represent 30.5% of patients with tonsillar diseases. The mean of age of patients with tonsillar diseases was 34.36±22.07.
Sinonasal malignancies represented 5.4%of patients with ENT malignancies. Adenocarcinoma represented 32.6% of patients with sinonasal malignancies. Squamous cell carcinoma represented 15.1% of patients with sinonasal malignancies while, transitional cell carcinoma and lymphoma represented 14% and 8.1% respectively. Chronic non specific inflammation represented 25.2% of patients with sinonasal diseases. The mean of age of patients with sinonasal diseases was 34.02±17.80.
Aural malignancies represented 0.5% of patient with ENT malignancies. Squamous cell carcinoma represented 25% of ear malignancies. Sarcoma represented 37.5%. Chronic non specific inflammation represented 39.8% of patients with ear diseases. The mean of age of patients with ear diseases was 34.88±20.46.