Very sorry to hear about your brother's condition.
There are five stages of colon cancer
Stage 4 colon cancer is the most advanced cancer stage. In general, stage 4 colon cancer has spread to nearby lymph
nodes and other parts of the body. Common destinations include the liver
and the lungs.This is called as metastasis.
Since bile duct is blocked it means cancer has spread to liver also.
is given till your body is able to tolerate it.
Most likely the WBC count
is down,that's why the chemo has also been stopped.
There is no other possible treatment at this stage except taking good care of your brother emotionally and nutritionally.
Best of luck