Why do patients with advanced pancreatic cancer pass black stools?

Black stool in the late stages of pancreatic cancer may be caused by bleeding in the upper gastrointestinal tract. It could also result from lipochrome in bile gradually turning into a yellowish-brown substance through enterohepatic circulation and then being excreted in feces. It is recommended to promptly visit a正规 hospital for a comprehensive examination to determine the exact cause of the black stool. During the illness, maintain a light diet and avoid spicy foods.