What is the most likely finding in a sonogram demonstrating peripelvic cysts?

In a sonogram demonstrating peripelvic cysts, the most likely finding is hydronephrosis. Peripelvic cysts are fluid-filled sacs that are located around the renal pelvis or within the kidney's hilum. Their presence can lead to obstruction of the urinary tract, resulting in a backup of urine. This buildup is what is known as hydronephrosis, which is characterized by the dilation of the renal pelvis and calyces due to the obstruction.

When examining the ultrasound for peripelvic cysts, the sonographer would typically look for signs of obstruction. If there is associated swelling or dilation of the renal collecting system, it is indicative of hydronephrosis. This condition may also provide insight into the functional status of the kidney affected by the cysts.

The other options, such as a cystadenoma, parapelvic cysts, and polycystic disease, do not directly correlate with the presence of peripelvic cysts nor would they commonly result from their presence. While parapelvic cysts may appear similar in location, they are distinct entities and would not explain the findings associated with hydronephrosis. Overall, hydronephrosis is a critical consideration when evaluating peripelvic cysts