الفهرس 
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Abstract
Appendicitis is the most common cause of acute abdominal pain that requires surgical intervention. Patients with appendicitis may present with a wide variety of clinical manifestations. Prompt diagnosis is essential to minimize the morbidity in this potentially life¬ threatening condition.In this study we examined 173 patients (93 male & 80 females) with clinical signs and symptoms suggestive of appendicle lesions. The age of the patients ranged from 14 to 58 years with mean age of 26.5 years. Ultrasound examination (gray scale &color Doppler) was done for all patient. Ninety patients were diagnosed as appendicle lesions and non appendicle lesions were found 111 50 patient. No ultrasound abnormalities were seen in 33 patients.Graded compression technique with 5-7.5 linear’ array transducer, demonstrated that non compressibility of appendices more than 6 mm in anteropsterior diameter was the primary criterion for the sonographic diagnosis of acute appendicitis. Additional signs helpful in diagnosis of appendicitis including the presence of appendicolithes (8 patients), periappendiceal fluid (19 patients), increased echogenicity of periappendiceal fat (18 patients), interruption of echogenic submucosal layer of the appendix (4 patients), and appendiceal wall hyperemia on color Doppler firing (71 patients) .