title: Aquarium sign in the left atrium.
abstract: A 50-year-old man presented with fever and chest pain. Later on the same day, he developed ischemic stroke and deteriorated into loss of consciousness. A trans-thoracic echocardiography showed air bubbles in the left atrium, resembling the floating bubbles in an aquarium. After further workups, atrio-esophageal fistula was diagnosed. To the best of our knowledge visualization of atrio-esophageal fistula by echocardiography has never been described previously.
authors.forename: Kamran
authors.initials: K
authors.lastname: Aghasadeghi
authors.forename: Amir
authors.initials: A
authors.lastname: Aslani
mesh_terms: D004452:Echocardiography; D004937:Esophageal Fistula / Q000150:complications / Q000000981:diagnostic imaging*; D017809:Fatal Outcome; D005402:Fistula / Q000150:complications / Q000000981:diagnostic imaging; D006325:Heart Atria / Q000000981:diagnostic imaging*; D006331:Heart Diseases / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D020521:Stroke / Q000209:etiology*