Esophageal Obstruction Anatomy
To better understand esophageal stricture, it helps to understand the anatomy of the esophagus.
The esophagus is a muscular tube that propels food from the mouth, to the stomach. It begins in the pharynx, just below the base of the tongue, and passes through the chest, next to the spine. It then passes through the diaphragm before emptying into the stomach.
The bottom of the esophagus opens during swallowing, and then closes after the food has entered the stomach. This prevents food from leaking back into the esophagus.
- al-Bassam A. Surgical management of severe peptic esophageal stricture in children. Hepatogastroenterology. 2003 May-Jun;50(51):714-7. 
- Parrilla P, Martinez de Haro LF, Ortiz A, Munitiz V, Serrano A, Torres G. Barrett's esophagus without esophageal stricture does not increase the rate of failure of Nissen fundoplication. Ann Surg. 2003 Apr;237(4):488-93. 
- Wang YG, Tio TL, Soehendra N. Endoscopic dilation of esophageal stricture without fluoroscopy is safe and effective. World J Gastroenterol. 2002 Aug;8(4):766-8.