Your mother's initial operation was for removal of gallbladder
because of gallstones. The reason for obstructive jaundice
month after surgery could mean a few things. Apparently,
there was a retained stone in the common bile duct, the
channel that brings the bile from the liver
ducts to the gallbladder.
If this was not detected prior to surgery ,this can happen.
An examination called ERCP (Endoscopic retrograde cholangio pancreatography)
could have shown the stone and could have been removed.
The other cause is stricture of the bile duct from scar tissue. This also requires
the test that I mention, and they can treat it with placing a stent
the duct open and relieve the blockage.
This is done by experienced gastroenterologists who do this a lot or may be
a surgeon trained in these kinds of procedures.
I would recommend that you enquire around and some research to find out
who is available locally to do this. You can also contact the university hospital
if one is close by for additional help.
I wish your mother the best.