<prompt> A 15 year old child presents in the OPD with acute abdominal pain. He also gives history of blood and mucous in the stool. On PA examination a mass is palpable. The MOST probable diagnosis in this patient is?Meckels diveiculumVolvulusIntussusceptionHyperophic pyloric stenosis  <response>: A syndrome of colicky pain, passage of blood per rectum and a palpable mass intussuscepted segment is characteristic of intussusception. Ref: CSDT 13e, Page 629; Bailey Love 25e, Page 1191. 