Sorry to hear about your husband's condition. It looks like he is suffering from pancreatic or bile duct cancer
, which is leading to jaundice
(yellowish discoloration). The fact that surgery was done done and only chemo was given, suggests that it is in an advanced state. That is the reason for his weight loss
as well. It is difficult for me to tell you exactly how long does he have but it certainly has a poor prognosis.
Hoping for the best.