<prompt> Answer this question truthfullyWhat is the understanding of the underlying functional and structural abnormalities that cause esophageal strictures?  <response>: <reason> On gross pathology, circumferential thickening of the lower esophageal wall are characteristic finding of esophageal stricture due to gastroesophageal reflux disease. Pale mucosa with white exudate in lymphocytic esophagitis Swelling and hemorrhagic congestion in caustic ingestion Multiple yellow plaque s in infectious esophagitis due to Candida Ulceration of the esophagus in viral esophagitis 