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Table 3 Important findings to note on MDCT prior to RFA

From: Anomalous pulmonary venous drainage: a pictorial essay with a CT focus

• Identification of normal pulmonary vein anatomy

• Diameter of the ostia and their distance to the first-order branch

• Presence of supernumerary or conjoined veins, size of their ostia and distance to the first-order branches.

• Presence of anomalous pulmonary venous drainage

• Presence or absence of thrombus in the atrium or atrial appendage

• Incidental findings in the lungs or extra-cardiac soft tissues.