Which clinical feature is NOT associated with Hirschsprung's disease?

Hirschsprung's disease, also known as congenital aganglionic megacolon, is characterized by the absence of ganglion cells in part or all of the colon, leading to a functional obstruction. The clinical features commonly associated with this condition include abdominal distension due to the accumulation of stool and gas above the obstruction, bilious emesis resulting from proximal bowel obstruction, and a failure to pass stool within the first 48 hours of life, which is often one of the earliest signs observed in newborns.

Currant jelly stool, on the other hand, is primarily associated with conditions such as intussusception. This type of stool is a mixture of mucus and blood often seen when intestinal tissue telescopes into itself. In the case of Hirschsprung's disease, the stool may be difficult to pass but typically does not have the characteristic appearance of currant jelly. Thus, this feature is not associated with Hirschsprung's disease, making it the correct choice in this context. Understanding the specific physiological characteristics and manifestations of Hirschsprung's disease can aid in differentiating it from other gastrointestinal conditions.