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The Egyptian Heart Journal
Fig. 3 | The Egyptian Heart Journal

Fig. 3

From: A large type I right pulmonary artery to left atrium fistula: underwent successful percutaneous device closure with duct occluder—a rare case report

Fig. 3

Types of RPA-LA fistula—schematic representation: Type I: proximal RPA-LA fistula with normal pulmonary venous drainage. Type II: Lower lobe branch of RPA forms an aneurysmal sac and connects to LA in the absence of the right inferior pulmonary vein. Type III: The aneurysmal fistula tract receives all the pulmonary venous drainage. Type IV: All right-sided pulmonary veins drain into the aneurysmal sac, with normal left-sided pulmonary venous drainage to LA (LA left atrium, LLPV left lower pulmonary vein, LPA left pulmonary artery, LUPV left upper pulmonary vein, PA pulmonary artery, RA right atrium, RLPV right lower pulmonary vein, RMPV right middle pulmonary vein, RUPV right upper pulmonary vein)

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