How is intussusception diagnosed?
The history of abdominal pain and vomiting as described above, may suggest the diagnosis of intussusception. Additionally, the examining doctor may feel an abdominal “sausage-shaped” mass (the intussusception itself) or upon auscultation with a stethoscope, may hear diminished or absent bowel sounds. Lab tests are usually not helpful, although plain abdominal X-rays can reveal signs of an intestinal obstruction, including air-fluid levels, decreased gas, and unexplained masses, usually seen in the right lower quadrant of the abdomen. Ultrasound and CT scans are generally not required to make the diagnosis. A barium, water-soluble contrast or air enema is considered both diagnostic and therapeutic in the management of intussusception. This radiologic procedure involves the introduction of the contrast into the lower intestine. If an intussusception is present, it will be seen during the imaging. Often just the introduction of the contrast will reduce the telescoped bowel to its normal p