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Various authors report different "normal" ranges for the diameter of the common bile duct. The consensus is that most people have a common bile duct diameter of around 5mm, +/- 1 mm. However, there are reports were people with no hepatobilliary disease have a "normal" common bile duct size up to 10 mm. Also, there is a correlation between common bile duct diameter and age. Most physicians would like to check things further if the common bile duct diameter is greater than about 7 mm, particularly if there are symptoms indicating hepatobilliary disease (abdominal pain with or without jaundice, fever etc.). Finally, even "normal" common bile duct sizes do not exclude the possibility of disease (such as stones).

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15y ago
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11y ago

yes and upto 6 mm

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Q: What is the normal size of the common bile duct?
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