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Autophagy and its current relevance to the diagnosis and clinical management of esophageal diseases

Autophagy is an evolutionarily conserved cell survival program that degrades dysfunctional organelles and misfolded or long‐lived proteins through the formation of lysosomes. Basal autophagy helps to maintain cellular homeostasis, while additional autophagy can be induced under cellular stress conditions. Autophagy has shown to be involved in a variety of diseases, such as inflammation, autoimmune diseases, degeneration, and cancer. We review the relevance of autophagy to the diagnosis and clinical management of esophageal diseases with the following questions in mind. What is autophagy and can/should we detect it in routine pathology specimens? What is the role of autophagy in gastroesophageal reflux disease/inflammatory esophageal disease? What role may autophagy play in the interaction between pro‐ and antiapoptotic pathways in esophageal malignancies and treatment?