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What is the upper limit of normal for CBD diameter in a healthy adult patient 60 years old?

According to a study on MRCP data, the common bile duct (CBD) diameter significantly increases with age, showing that conventional reference values can lead to unnecessary investigations. This means that for a healthy adult patient, the upper limit of normal for CBD diameter in a 60-year-old can be higher than previously thought due to physiological changes rather than pathology. Understanding these age-related variations is crucial for accurate diagnosis and avoiding unnecessary concern.