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We report a 7‐year‐old boy with unilateral choanal atresia who was referred for cardiac consultation before surgery. On echocardiography, the heart was normal except the presence of a double‐circle appearance and a V‐shaped structure on the suprasternal notch view. Cardiac computed tomography (CT) angiography confirmed the diagnosis of the double left innominate vein (DLIV). DLIV is a rare systemic venous anomaly, which often produces diagnostic confusion on echocardiography. Correct diagnosis is essential before performing any invasive procedure through this vein. Co‐existence of the two echocardiographic signs of the double‐circle appearance and the V sign confirms this tricky diagnosis.