What abnormality would a sagittal sonogram medial to the porta hepatis likely demonstrate?

A sagittal sonogram taken medial to the porta hepatis is primarily concerned with the structures surrounding the liver's hilum, including the common bile duct and the portal vein. In this anatomical area, one relevant abnormality that could commonly be assessed is the dilation of the common bile duct, often indicative of an obstruction.

When the common bile duct is dilated, it suggests a blockage preventing bile from flowing into the duodenum. This could be due to several reasons such as gallstones, tumors, or inflammation in the surrounding area, which can cause significant clinical issues including jaundice and biliary colic.

While the other conditions mentioned can affect nearby structures or have other implications for health, they do not directly present as abnormalities identifiable in a sagittal view at this location. For example, pyloric stenosis is a condition affecting the pylorus of the stomach and is more associated with the gastric outlet, not the porta hepatis area. Chronic cholecystitis relates specifically to the gallbladder and surrounding inflammation but would not typically demonstrate the same sonographic signs in a direct sagittal evaluation at the porta hepatis. Portal vein thrombosis would be assessed based on changes in blood flow and structure, which might not be as apparent as