Chest radiographs showing reperfusion pulmonary edema of the left upper lobe in a patient with TOF and PA after unifocalization

(A) Preoperative angiogram in a 3-year-old patient showing a long-segment stenotic collateral vessel to the left upper lobe (arrowhead).
(B) Chest radiograph on postoperative day 2 after unifocalization of the left upper lobe collateral vessel showing reperfusion pulmonary edema in the left upper lobe (arrowhead).