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Background <p>Anomalous systemic arterial supply to the basal lung (ASASB) and partial anomalous pulmonary venous connection (PAPVC) are rare congenital anomalies; their coexistence in a patient with lung cancer has not been previously reported.</p> Case presentation <p>A 68-year-old woman was referred for a right lower lobe mass detected on screening. Contrast-enhanced computed tomography showed an aberrant artery from the abdominal aorta supplying segments 9–10 and drainage of all right upper pulmonary veins into the superior vena cava. Qp/Qs on echocardiography was 1.3. Three-dimensional reconstruction clarified the vascular anatomy and guided thoracoscopic right lower lobectomy. The aberrant artery was doubly ligated at its intrathoracic origin and divided with a vascular stapler. Postoperative recovery was uneventful. Histology revealed papillary-predominant adenocarcinoma (pT2aN0M0). Twelve-month surveillance showed no recurrence or stump aneurysm; Qp/Qs decreased to 1.1.</p> Conclusions <p>Careful cardiopulmonary evaluation and three-dimensional imaging permitted safe minimally invasive resection in this rare condition. However, the mechanisms underlying postoperative changes in Qp/Qs remain unclear and require cautious interpretation.</p>

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Lobectomy for right lower lobe lung cancer with anomalous systemic arterial supply and partial anomalous pulmonary venous connection: a case report

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月22日

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  • Yuki Hirai,
  • Takashi Anayama,
  • Hironobu Wada,
  • Kentaro Hirohashi,
  • Yuki Onozato,
  • Toshiko Kamata,
  • Ichiro Yoshino,
  • Shigetoshi Yoshida

摘要

Background

Anomalous systemic arterial supply to the basal lung (ASASB) and partial anomalous pulmonary venous connection (PAPVC) are rare congenital anomalies; their coexistence in a patient with lung cancer has not been previously reported.

Case presentation

A 68-year-old woman was referred for a right lower lobe mass detected on screening. Contrast-enhanced computed tomography showed an aberrant artery from the abdominal aorta supplying segments 9–10 and drainage of all right upper pulmonary veins into the superior vena cava. Qp/Qs on echocardiography was 1.3. Three-dimensional reconstruction clarified the vascular anatomy and guided thoracoscopic right lower lobectomy. The aberrant artery was doubly ligated at its intrathoracic origin and divided with a vascular stapler. Postoperative recovery was uneventful. Histology revealed papillary-predominant adenocarcinoma (pT2aN0M0). Twelve-month surveillance showed no recurrence or stump aneurysm; Qp/Qs decreased to 1.1.

Conclusions

Careful cardiopulmonary evaluation and three-dimensional imaging permitted safe minimally invasive resection in this rare condition. However, the mechanisms underlying postoperative changes in Qp/Qs remain unclear and require cautious interpretation.