A three-year-old is admitted with suspected intussusception. Classic signs of intussusception include: A. Abdominal distention, dark urine, and growth failure B. Projectile vomiting and palpable olive-shaped mass C. Pain, sausage-shaped abdominal mass, and currant jelly stools D. Abdominal distention, general malnutrition, and bulky stools

Intussusception is a condition where a part of the intestine slides into an adjacent part of the intestine, causing a blockage. It commonly occurs in young children and can lead to an obstruction that prevents the passage of food and fluid.

The classic signs of intussusception are: 1. Sudden, severe abdominal pain (often described as crampy or colicky) 2. A sausage-shaped mass in the abdomen that may be felt by a healthcare provider 3. Currant jelly stools (a red or dark red, gel-like substance in the stool due to blood mixed with mucus)

Now let's analyze each answer choice: A. Abdominal distention, dark urine, and growth failure - This option includes abdominal distention, but it is not specific to intussusception, and the other two symptoms are not associated with intussusception. B. Projectile vomiting and palpable olive-shaped mass - Projectile vomiting can occur in intussusception, but an olive-shaped mass is more commonly associated with pyloric stenosis, not intussusception. C. Pain, sausage-shaped abdominal mass, and currant jelly stools - This option correctly identifies all the classic signs of intussusception. D. Abdominal distention, general malnutrition, and bulky stools - These symptoms are more suggestive of a general gastrointestinal disorder, not specifically for intussusception. Based on the analysis, the correct answer is:

C. Pain, sausage-shaped abdominal mass, and currant jelly stools