Hello joy2world
The homogonous echo texture means your liver looks uniform (ie not very fibrotic/cirrhotic)
Your liver makes bile which is a mixture of detergent to help digestion and waste products that end up in your stool. The hepatic ducts are in the liver and are joined by the cystic duct from the gall bladder (a storage reserviour for bile) to form the common bile duct. The common bile duct goes through your pancreas to get to your duodenum which is part of your gut tube.
Anyway, your common bile duct is slightly larger than the usual 6 mm and this has been commented on. The reasons can include being born that way, having a stone in the duct blocking it, some medications, or a tumour. The "etiology (reason) for this is unclear" means that a stone can't be seen, a tumour can't be seen ie there is no obvious reason for it.
The further imaging can be performed as clinically indicated is a standard clause so that the radiologist can blame the ordering doctor for not ordering more tests if it turns out that the cause was serious.
It's probably nothing, but should be looked into/kept an eye on by your doctor.