title: Aortic aneurysm dissection causing V/Q mismatch.
abstract: A case of unilateral mismatch on a ventilation/perfusion lung scan due to aortic aneurysm dissection is presented. Pulmonary embolism should not be considered the sole cause of unilateral lung mismatch. Clinical evaluation and pulmonary angiography should be used for a definitive diagnosis.
authors: Department of Radiology, NYU Medical Center/Bellevue Hospital, New York.
authors: S
authors: S
authors: Tiu
authors: P J
authors: PJ
authors: Toth
authors: H J
authors: HJ
authors: Banner
authors: E L
authors: EL
authors: Kramer
authors: J J
authors: JJ
authors: Sanger
mesh_terms: D000784:Aortic Dissection / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000503:physiopathology*; D001014:Aortic Aneurysm / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000503:physiopathology*; D001027:Aortography; D003937:Diagnosis, Differential; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011655:Pulmonary Embolism / Q000175:diagnosis; D011877:Radionuclide Imaging; D014692:Ventilation-Perfusion Ratio