What is a common stool finding associated with intussusception?

Intussusception is a condition where a part of the intestine telescopes into an adjacent segment, leading to obstruction and potentially ischemic bowel. One of the hallmark findings in this condition is the presence of "currant jelly stool." This type of stool is characterized by the combination of blood and mucus, giving it a dark red, jelly-like appearance.

The reddish color in currant jelly stools results from the hemorrhage that occurs due to the compromised blood supply to the affected area of the intestine. This is specifically associated with intussusception, especially in children, and serves as a crucial clinical indicator for healthcare providers to consider this diagnosis.

Other stool findings, such as clay-colored stools, are more indicative of biliary obstruction and liver-related issues. Greenish diarrhea can occur in a variety of gastrointestinal conditions but is not specific to intussusception. Hard, pellet-like stools usually suggest constipation and do not relate to the acute complications associated with intussusception. Thus, the presence of currant jelly stool is specifically tied to the underlying pathophysiology of intussusception, making it the correct answer in this context.