#6- Bad smell!
Dr. Kelly Ryan writes, “While ‘dog breath’ is common, if you notice unusually foul odors coming from the mouth, nose or rectal area, it may be due to a tumor.”
#7- Difficulty swallowing
Dr. Phil Zeltzman writes, “A lump in the neck could be putting pressure on the esophagus (the tube between the mouth and the stomach).”
