5. Symptoms of lung problems
include coughing up blood, shortness of breath, difficulty breathing, chronic cough, repeated bouts of bronchitis or pneumonia, and wheezing.
6. Symptoms of the stomach or digestive problems
include rectal bleeding, blood in the stool or black stools, changes in bowel habits or not being able to control bowels, constipation, diarrhea, heartburn or acid reflux, or vomiting blood.