Subsegmental pulmonary vein V6a from independent aberrant segmental vein V2 posterior to the bronchus intermedius.

An 80-year old woman presented with an abnormal shadow at superior segmental 6 (S6). Chest X-ray and computed tomography (Fig. 1A and B) were performed. She underwent a video-assisted S segmentectomy. An anomalous pulmonary vein, the aberrant V behind the bronchus intermedius, was identified and branched off into the subsegmental pulmonary vein Va (Fig. 2). Vb and Vc were from the inferior pulmonary vein. Figure 1: (A) Chest CT and (B) 3D-CT show the anomalous pulmonary vein, aberrant V (arrows).