Scimitar syndrome is a rare, complex congenital anomaly characterized by partial anomalous pulmonary venous drainage into the inferior vena cava with hypoplasia of the right-sided lung, pulmonary artery and bronchial tree. Frequently aortopulmonary collaterals co-occur incrising pulmonary blood flow and hence the risk of pulmonary arterial hypertension. Surgical correction remains the gold-standard therapy. The autors present the case of a 23-days-old newborn after food aspiration, presenting respiratory symptoms: tachypnoe, tachycardia, respiratory effort with the use of accessory muscles, cough and crackles. The chest X-ray revealed the right lung consolidation. Laboratory markers of inflammatory process were negative. Aspiration pneumonia was diagnosed and the treatment was introduced. Despite the newborn presented respiratory distress with radiological changes. The echocardiography was performer and scimitar syndrome was suspected. The diagnosis was confirmed during cardiac catheterization in which aortopulmonary collateral artery running to the right lower lobe was demonstrated. The vessel was embolized with Amplatzer device.