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Internal scar tissue is formed as a result of some surgical procedures, such as hartmannâs procedure, injury, inflammation or infection. The medical term for internal scarring is âadhesionâ. It is different from external scar tissue in the way that it forms. As it can cause tethers or a biological barrier, and result in pain and complications. It is caused by your bodyâs own healing process.
Esophageal stricture is typically caused by scar tissue that develops as a result of the following: 1  Ingestion of damaging substances, such as household cleaning agents. 2  Treatment of esophageal varicesâenlarged veins in the esophagus.  Injuries caused by an endoscopeâa thin, lighted tube used to see inside the body.