Unique triad of shunts in a patient with paroxysmal palpitations!

We present the case of a 34-year-old woman with a rare constellation of congenital cardiovascular defects. She presented with new-onset dyspnoea on exertion and intermittent palpitations. Extensive cardiac workup revealed anomalous drainage of the inferior vena cava and a large secundum atrial septal defect. She underwent surgical repair. Intraoperatively, an additional congenital venous anomaly was discovered, a partial anomalous pulmonary venous connection. Specifically, the right inferior pulmonary vein connected to the inferior vena cava, and together, they drained into the left atrium. On conducting a thorough literature review, we believe this is the first reported case in an adult female.