A case of left S8+9 segmentectomy involving a lung cancer patient with a mediastinal inferior lobar branch of the pulmonary artery

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  • Mochinaga Koji
    Department of Thoracic Surgery, National Hospital Organization Nagasaki Medical Center
  • Machino Ryusuke
    Department of Thoracic Surgery, National Hospital Organization Nagasaki Medical Center
  • Tsuji Hiroharu
    Department of Thoracic Surgery, National Hospital Organization Nagasaki Medical Center
  • Tagawa Tsutomu
    Department of Thoracic Surgery, National Hospital Organization Nagasaki Medical Center

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  • 区域切除を行った肺動脈縦隔型分岐の1例

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<p>We report a case of left lower segmentectomy involving a lung cancer patient with a mediastinal inferior lobar branch of the pulmonary artery. Right lower lobectomy+S2 segmentectomy was performed 2 months earlier. The mediastinal branch (A8b+9b+10b) from the left main pulmonary artery ran between the superior and inferior pulmonary vein and along the mediastinal side of the lower bronchus. A8b+9b ran in front of the inferior pulmonary vein, and A10b ran behind the inferior pulmonary vein. Mediastinal inferior lobar branching is rare and its variations are diverse. Additionally, segmentectomy for this variation has not been reported. Although such branching of the pulmonary artery is atypical, we were able to perform segmentectomy with video-assisted thoracic surgery as usual in this case. 3D-CT was very useful to ensure a safe segmentectomy even with an aberrant pulmonary arterial branch.</p>

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