I had this problem last year, sometimes it lasted for 8 hours. I had had two surgeries and thought it was a result of the NG tubes.I had an endoscopy that showed nothing out of the ordinary but the scope itself must have stretched the esophagus enough to relieve it, because I didn't have any spells for months.Maybe I just relaxed myself knowing it wasn't serious. DR said its sometimes a nervous spasm.I have had a couple incidents in the last couple months, but nothing like it was. I do have many occasions when 6-8 hours after I eat I feel something and cough out food. So weird.