Compression of the Right Ventricular Outflow Tract due to Straight Back Syndrome Clarified by Low-dose Dual-source Computed Tomography

作者：Hasegawa Kohei; Takaya Tomofumi^*; Mori Shumpei; Ito Tatsuro; Fujiwara Sei; Nishii Tatsuya; Kono Atsushi K; Shimoura Hiroyuki; Tanaka Hidekazu; Hirata Ken ichi

来源：Internal Medicine, 2016, 55(22): 3279-3283.

DOI：10.2169/internalmedicine.55.7193

• straight back syndrome
• right ventricular outflow tract
• dual-source computed tomography
• atrial septal defect

A 23-year-old asymptomatic woman was referred to our hospital for further examination of a systolic ejection murmur with fixed splitting of the second heart sound auscultated at the third left sternal border. Initial echocardiography could not detect the cause. Subsequently performed low-dose computed tomography, however, ruled out the possibility of any congenital heart diseases, but revealed a markedly shortened anteroposterior diameter of the chest, which led us to a diagnosis of straight back syndrome. A vertically oriented "pan-cake" appearance of the heart, straight vertebral column, and compression of the right ventricular outflow tract were clearly demonstrated on the reconstructed images.

• 出版日期2016