Intussusception most commonly presents in which age range?

Intussusception most commonly presents in which age range?

• A. 0-6 months
• B. 6 months to 3 years
• C. 4-8 years
• D. Adults >18

Answer: (B)

Intussusception most commonly happens in early childhood, with a peak around infancy to toddler years. The age range of about six months to three years fits this peak incidence, because by this time lymphoid tissue in the terminal ileum (Peyer patches) can become enlarged, especially after a viral illness, creating a lead point that allows one bowel segment to telescope into another. This makes that younger age group the most likely, while it becomes much less common in older children and rare in adults where a pathologic lead point is usually involved. So, the six months to three years window is the best answer because it aligns with the natural distribution of the condition.

Intussusception most commonly happens in early childhood, with a peak around infancy to toddler years. The age range of about six months to three years fits this peak incidence, because by this time lymphoid tissue in the terminal ileum (Peyer patches) can become enlarged, especially after a viral illness, creating a lead point that allows one bowel segment to telescope into another. This makes that younger age group the most likely, while it becomes much less common in older children and rare in adults where a pathologic lead point is usually involved. So, the six months to three years window is the best answer because it aligns with the natural distribution of the condition.