title: Balloon-shaped cystic subaortic membrane.
abstract: A 22-year-old man with a 4 month history of dyspnoea on exertion was referred for echocardiography. Transthoracic echocardiography revealed a balloon-shaped cystic mass (2 x 2 cm) attached to the left ventricular outflow tract (LVOT). Continuous-wave Doppler echocardiography showed a 44 mmHg mean LVOT gradient. The patient underwent transoesophageal echocardiography for detailed echocardiographic examination of LVOT and aortic valve. Transoesophageal echocardiography revealed a balloon-shaped cystic mass originating from the LVOT at the aorto-mitral communication. In the operating theatre, a cystic ballooning subaortic membrane was found and excised successfully. The morphology of the membrane was similar to that shown by transoesophageal echocardiography.
authors.affiliation: Cardiology Department, Namazi Hospital, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Kamran
authors.initials: K
authors.lastname: Aghasadeghi
authors.forename: Amir
authors.initials: A
authors.lastname: Aslani
authors.forename: Ahmad Ali
authors.initials: AA
authors.lastname: Amirghofran
mesh_terms: D003560:Cysts / Q000000981:diagnostic imaging* / Q000601:surgery; D003937:Diagnosis, Differential; D021922:Discrete Subaortic Stenosis / Q000000981:diagnostic imaging* / Q000601:surgery; D004452:Echocardiography / Q000379:methods*; D006801:Humans; D008297:Male; D055815:Young Adult