The commonest cause of enlargement of the esophagus is Achalasia cardia. There is a nerve problem of the food pipe (esophagus) which enlarges it as food pents up there. Please read about this condition;
This is not related to fall and may be an incidental finding, though it can cause chest pain. Fall may have precipitated or aggravated the symptoms.
Please feel free for your follow up questions.
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One of the symptoms associated with the condition is bad breath and regurgitation of the food. So that need to be inquired and ascertained. A condition called as costochondritis will have a local tenderness at the pain site. Following are the non cardiac conditions (obviously echocardiography additionally should be performed with the cardiac enzymes by the blood work to categorically rule out any heart association);
1) GERD with the history of reflux would be prime consideration as it is one of the commonest cause for non cardiac chest pain.
2) Hiatus hernia
4) Costochondritis; it is inflammation at the junctions of rib and cartilage or with the breast bone / sternum. Local analgesic ointment, or spray, chest brace and warm compresses with Ibuprofen is helpful. Another possibility is muscle sprain. Please read about the costochondritis;
5) Esophageal spasm
Investigations like Barium esophagogram, Esophagogastroduodenoscopy (EGD; camera exam), Esophageal manometry, Ambulatory 24-hour pH monitoring may be the next step of evaluation by your doctor. Anxiety and stress can increase any condition. Chest x-ray is helpful for pleurodynia and polychondritis and if not already done should be ordered.
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