title: More than just the "Q-tip sign".
abstract: In the early days of transesophageal echocardiography, the "Q-tip sign" was occasionally mistaken for a left atrial mass. This area is now well recognized as a normal anatomic landmark dividing the left atrial appendage from the left upper pulmonary vein. However, in this report we describe 2 patients in whom pathology was found in this area, which should not be overlooked.
authors.affiliation: Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic and Foundation, Rochester, MN 55905, USA.
authors.forename: F
authors.initials: F
authors.lastname: Agostini
authors.forename: R L
authors.initials: RL
authors.lastname: Click
mesh_terms: D000368:Aged; D020517:Atrial Appendage / Q000000981:diagnostic imaging* / Q000473:pathology; D017548:Echocardiography, Transesophageal; D005260:Female; D005350:Fibroma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D006338:Heart Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D006801:Humans; D009232:Myxoma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D011667:Pulmonary Veins / Q000000981:diagnostic imaging* / Q000473:pathology