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A 51-year-old woman visited our hospital with a chief complaint of an abnormal chest shadow in the right lung detected during a routine annual check-up. Chest computed tomography showed a 14-mm ground-glass opacity in the right upper lobe, suspicious for lung cancer. At the same time, a tracheal bronchus originating directly from the trachea was observed. In addition to the tracheal bronchus, a pulmonary vein variation running dorsal to the pulmonary artery was detected. She underwent thoracoscopic apical segmentectomy and mediastinal lymph node sampling. Her postoperative course was uneventful. Tracheal bronchus is a rare anomaly, with an incidence of 0.1% to 2%. However, tracheal bronchus is often accompanied by pulmonary vessel variations, and care should thus be taken when performing thoracoscopic lung resection.

Thoracoscopic right apical segmentectomy for lung cancer with tracheal bronchus and variable pulmonary vein: a case report and literature review