Greetings of the day!
As per reports, looks like acute infection of gall bladder also there is mild Distension of common bike duct, so sometimes possibility is there that a calculi had passed from gall bladder to CBD.
To confirm the same, better to do a MRCP and also to corelate with
LIVER FUNCTION TEST and GGT ( Gamma Glutamine Transferase) TEST.
You can do a detail discussion over my online application app - Dr.parthgastro( Google play store). Would try to help you out