What is the typical stool characteristic in intussusception?

In intussusception, the typical stool characteristic is described as "currant jelly stools." This term refers to the appearance of the stool, which may have a mix of blood and mucus, giving it a red, jelly-like consistency. This occurs due to the obstruction caused by one segment of the intestine telescoping into another, leading to ischemia and potentially resulting in necrosis of the bowel. The presence of blood and mucus in the stool is indicative of the underlying pathology.

The other options do not reflect the presentation of stool in intussusception. Black tarry stools are often associated with upper gastrointestinal bleeding, where digested blood gives a tar-like appearance. Watery diarrhea generally suggests a process such as viral or bacterial gastroenteritis. Marble-like stools do not correspond to a recognized clinical presentation related to intussusception. Thus, the distinctive nature of currant jelly stools helps in recognizing intussusception as a potential diagnosis in pediatric patients presenting with abdominal pain, vomiting, and signs of intestinal obstruction.