title: Appearance of noncompaction-like remodeling of the anatomical right ventricle in a middle-aged subject with modified transposition of the great arteries who did not undergo surgery.
abstract: We describe noncompaction-like remodeling of the anatomical right ventricle (ARV) in a middle-aged subject with modified transposition of the great arteries (TGA). A 54 year-old male had been diagnosed with modified TGA at age 40, but no surgery was performed. Enhanced multislice CT revealed the ascending aorta coursing left of the anterior pulmonary trunk. Furthermore, the myocardium of the ARV appeared thickened, but contrast material could be observed in the ARV myocardium, which resembled noncompaction of the left ventricle (LV). We speculated trabecular development of the ARV, such as a Chiari network, and with TGA, the ARV provided systemic circulation through the aorta. The ARV wall may have thickened due to systemic pressure load, resulting in reduction of wall motion of the ARV on transthoracic echocardiogram. Recent advances in multislice CT imaging have revolutionized the exploration of RV anatomy, especially for depicting the three-dimensional appearance of noncompaction-like remodeling of the ARV in modified TGA in addition to transposition of the great arteries.
authors.forename: Miyuki
authors.initials: M
authors.lastname: Kawakubo
authors.forename: Nobusada
authors.initials: N
authors.lastname: Funabashi
authors.forename: Masae
authors.initials: M
authors.lastname: Uehara
authors.forename: Marehiko
authors.initials: M
authors.lastname: Ueda
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Hasegawa
authors.forename: Tai
authors.initials: T
authors.lastname: Sekine
authors.forename: Eiji
authors.initials: E
authors.lastname: Ichimoto
authors.forename: Kumi
authors.initials: K
authors.lastname: Yasukawa
authors.forename: Osahiro
authors.initials: O
authors.lastname: Takahashi
authors.forename: Yayoi
authors.initials: Y
authors.lastname: Yamamoto
authors.forename: Issei
authors.initials: I
authors.lastname: Komuro
mesh_terms: D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D009206:Myocardium / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D014188:Transposition of Great Vessels / Q000503:physiopathology*; D016278:Ventricular Function, Right; D017725:Ventricular Pressure; D020257:Ventricular Remodeling