What does "Cholelithiasis" refer to in abdominal ultrasound terms?

Cholelithiasis specifically refers to the presence of gallstones within the gallbladder. These stones can form from various substances found in bile, such as cholesterol or bilirubin, and can vary in size and number. In the context of abdominal ultrasound, cholelithiasis would be identified by visualizing these echogenic structures within the gallbladder, typically accompanied by shadowing, which helps to confirm their presence. Recognizing cholelithiasis is essential for diagnosing various gallbladder-related issues, including acute cholecystitis, which often occurs if a gallstone obstructs the cystic duct, leading to inflammation of the gallbladder.