I have had for a few months sharp, severe pain in upper throat on swallowing salad dressing or mayonnaise that has vinegar or fruit juice in it. No other symptoms. I find only supraglotteal cancer listed when I look on the Net for what this can be a symptom of. My ENT doctor had me get a barium swallow (stomach through larynx or most of larynx) which looked normal, and will be doing a more thorough exam (down-through-the-nose tube light, in-office); my mouth looked normal enough. She says may be from GERD, but I only get acid reflux once or twice a year, though when I do it is up into the mouth, no heartburn. Is there any significant chance that this may be GERD or simple ulcer in my throat or should I try to prepare for a finding of supraglottal cancer?