Final answer:
A palpable, nontender gallbladder associated with cancer on the head of the pancreas could be a sign of pancreatic cancer.
Step-by-step explanation:
A palpable, nontender gallbladder is a gallbladder that can be felt or detected through physical examination but does not cause any pain or tenderness. When it is associated with cancer on the head of the pancreas, it could be a sign of an underlying condition like pancreatic cancer. Other symptoms may include fever, malaise, anemia, and abdominal symptoms.