The echocardiographic evaluation of shunts in adults is often challenging due to their larger body size, which may impair visualization of cardiac structures. Close inspection of all transthoracic echocardiography (TTE) images is critical to identify subtle clues that may indicate the presence of a shunt, particularly in patients with unexplained cardiac chamber remodeling. Accordingly, we present a young patient with unexplained right ventricular enlargement who was found to have partial anomalous pulmonary venous return (PAPVR), which was detected by TTE.