Best diagnostic investigation for acute appendicitis in children is:

Ans: C. USGUltrasonography has a sensitivity of approximately 85% and a specificity of more than 90% for the diagnosis of acute appendicitis.Ultrasonography has the advantages of being a noninvasive modality requiring no patient preparation that also avoids exposure to ionizing radiation.Thus, it is commonly used in children and in pregnant patients with equivocal clinical findings suggestive of acute appendicitis.