<prompt> The commonest cause of intestinal obstruction in children isIntussusceptionVolvulusHerniaAdhesions  <response>: Intussusception Intussusception occurs when a portion of the alimentary tract is telescoped into an adjacent segment.It is the most common cause of intestinal obstruction between 3 months and 6 years of age.It is more common in males.Intusssception may be i Ileocolic most common ii Cecocolic iii IleoilealThe upper portion of bowel that invaginates into lower portion is called intussusceptum.The lower portion which receives telescoped upper portion is called intussuscipiens. 