Final answer:
The most common renal pathology in infants usually involves congenital conditions such as congenital hydronephrosis and multicystic dysplastic kidney, rather than acquired diseases.
Step-by-step explanation:
The most common renal pathology in infants can include a range of congenital abnormalities since the fetal kidneys are still maturing post-birth. Conditions such as congenital hydronephrosis, duplicated ureter, and multicystic dysplastic kidney are among the disorders that can be present at birth.
While acquired conditions like glomerulonephritis and hydronephrosis can occur, they are usually less common in infants compared to congenital conditions. In addition, acute renal failure (ARF) in infants can manifest due to pre-renal, renal, and post-renal causes, but it is essential to note that ARF can result from a large number of causes, including issues with the blood supply such as hypovolemia.