This document discusses intussusception, a condition where one segment of the intestine folds into another segment. It provides a historical overview of discoveries about intussusception from the 17th century onwards. It then describes the typical presentation of intussusception in children ages 1-5, including abdominal pain, vomiting, and bloody stools. Diagnosis is usually made using abdominal ultrasound. Treatment options discussed include saline enema reduction guided by ultrasound, operative reduction, or observation if symptoms are mild. Early diagnosis and treatment within 12 hours of onset improves survival rates.