DefinitionCytomegalovirus (CMV) esophagitis is a viral infection of the esophagus, the muscular tube through which food travels from the mouth to the stomach.See also:CMV gastroenteritisCMV retinitisCytomegalovirus - immunocompromised hostCongenital cytomegalovirusAlternative NamesCytomegalovirus esophagitisCauses, incidence, and risk factorsCMV esophagitis is caused by the cytomegalovirus (CMV).The condition is often a sign of a weakened immune system. The following conditions raise your risk for CMV infections:HIV/AIDSChemotherapyDiabetesLeukemia or lymphomaOrgan transplantsOther conditions that suppress or weaken your immune systemSymptomsSymptoms include:Difficult and painful swallowingLow-grade feverMouth sores (oral lesions)Signs and testsBlood and urine cultureCMV antigenemiaCold ag