Noted your detailed history and understood the concerns.Burning sensation in chest and of food being held in esophagus
is indicative of GERD or Esophagitis
There can be an actual mechanical obstruction or there can be a condition called esophagospsm. Esophagospasm is usually instigated by certain foods, beverages like coke, anxiety, too hot or too cold foods and fluids, smells and so on.
Hence I would advise you to find the instigating or enhancing factors, foods, beverages and stop these altogether to get better results. You have already undergone all the relevant tests like upper GI Endoscopy
and so on hence this is the possibility.
Motility study of esophagus by Barium swallow under fluoroscopy
for real-time visualization can help. Consume only the foods and beverages that suit you the most. Take a second opinion
of another Gastroenterologist to be sure about.
Hope I have answered your query. Let me know if I can assist you further.
Dr. T Chandrakant,