<prompt> Most common differential diagnosis for appendicitis in children isGastroenteritisMesentric lymphadenopathyIntussusceptionMeckels diveiculitis  <response>: Differential diagnosis of acute appendicitis in children Gastroenteritis Mesenteric adenitis Meckels diveiculitis Intussusception Henoch-Schonlein purpura Lobar pneumonia Ref: Bailey Love;s Sho Practice of Surgery,E25,Page-1209 