Potential of colonoscopy as a treatment for intussusception in children.

Background And Study Aims:  Invagination, which can occur in any part of the intestine, usually affects children and is the second most common cause of intestinal obstruction after pyloric stenosis. The cause of these intussusceptions in children is usually unknown and they typically occur within the ileocolic region. Management of pediatric patients with the condition often consists of surgical intervention.

Primary aortoesophageal fistula: a rare cause of acute upper gastrointestinal bleeding.

Acute upper gastrointestinal bleeding is a potentially life-threatening emergency, especially in the elderly. This condition accounts for approximately 1% of all emergency room admissions. Among the causes of such bleeding is aortoesophageal fistula, a dreaded but apparently rare condition, first recognized in 1818.