<prompt> a 51 yr old male complaints of blood stained stools and abdominal pain diagnosis ?sigmoid colonchrons diseaseintussusceptiondiveiculosis  <response>: Intussusception is a condition in which one segment of intestine telescopes inside of another, causing an intestinal obstruction blockage. Although intussusception can occur anywhere in the gastrointestinal tract, it usually occurs at the junction of the small and large intestines. Symptoms: Vomiting; Hematochezia; Abdominal pain... ref : bailey and love 27th ed 