<prompt> Answer this question truthfullyWhat is indicated by the chest x-ray in cases of tricuspid atresia?  <response>: <reason> A chest x-ray may be helpful in the diagnosis of tricuspid atresia. Findings on an x-ray suggestive of tricuspid atresia include: Situs solitus Left-sided aortic arch Levocardia Absent main pulmonary artery Pulmonary oligemia with decreased vascular markings Right aortic arch in 25 of cases.Shown below is an example of chest x-ray in a patient with tricuspid atresia demonstrating the following features: Reduced pulmonary blood flow Prominent aortic root AO and right atrium RA Right atrial RA enlargement Absence of a right ventricle The left ventricle LV enlargement 