Sano M, Mizuno T, Iizuka M, Yamada T, Kasugai T, Ishiguro H
Department of Surgery, Seirei Respiratory Disease Center, Seirei Mikatabara General Hospital, Hamamatsu, Japan.
Nihon Kyobu Geka Gakkai Zasshi. 1996 Sep;44(9):1772-5.
A 70-year-old male, underwent left lower lobectomy due to lung cancer, had an extremely rare form of left pulmonary artery branching. His pulmonary artery supplying to lateral and posterior basal segments (A9 + 10) was arisen anteriorly from the root of the left pulmonary artery in the mediastinum and ran below in the anterior portion of the upper lobe stem bronchus. Embriologically, this abnormality might be due to a derangement of anastomosis between the pulmonary arch system and splanic plexus in primitive lung, and was interpreted as one of the pulmonary sequestration. Clinically, particularly at thoracotomy, the presence of a large vessel in an unexpected location is very hazardous, so that preoperative pulmonary angiography is useful to detect the abnormal branching.
一名70岁男性因肺癌接受了左下肺叶切除术，其左肺动脉分支形式极为罕见。供应外侧和后基底段（A9 + 10）的肺动脉在纵隔内从左肺动脉根部前方发出，并在上叶主支气管前部下方走行。从胚胎学角度来看，这种异常可能是由于原始肺中肺弓系统与内脏神经丛之间吻合异常所致，被解释为肺隔离症之一。临床上，尤其是在开胸手术时，在意外位置出现大血管非常危险，因此术前肺血管造影有助于检测异常分支。
