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Rare venous connection causing severe hypoxia after Fontan operation

Departments of Pediatrics, University of Tokushima, Kuramoto-cho-3, Tokushima 770-8503, Japan

*Corresponding author. Tel.: +81-88-633-7135; fax: +81-88-631-8697.

E-mail address: hayabuchi{at}clin.med.tokushima-u.ac.jp (Y. Hayabuchi).

We describe a rare case of cyanosis following the Fontan operation with right-to-left shunting at the venous level, that is, an azygos venous to pulmonary venous connection. Few cases with partial anomalous pulmonary venous connection to azygos vein have been reported; however, there have been no reports describing the connection from azygos vein to pulmonary vein, which results in desaturation after Fontan operation. Multidetector-row computed tomography (MDCT) was a useful tool to depict this vascular malformation.

Key Words: Fontan operation; Cyanosis; Collateral vessel