Chujo Masao, Anami Kentaro
Division of Surgery, Kitsuki Central Hospital, Kitsuki City, Oita, Japan.
J Bronchology Interv Pulmonol. 2014 Jul;21(3):192-8. doi: 10.1097/LBR.0000000000000059.
We investigated the branching patterns of B7 and A7 on computed tomography.
The study population was 2150 patients. The branching patterns were classified into 5 types.
Pattern 1 [the entire S7 segment was ventral to the inferior pulmonary vein (IPV), and A7 branched from the basal segmental artery (Aba) and ran on the ventral side of the basal bronchus (Bba)] was found in 1373 patients, pattern 2 (B7 showed double branching into the dorsal and ventral sides of the IPV. A7 flowed into the lung on the dorsal side of the IPV and ran on the dorsal side of the Bba after branching from the Aba) in 226, pattern 3 (B7 showed double branching into the dorsal and ventral sides of the IPV. A7 ran on the ventral side of the Bba after branching from the Aba) in 170, pattern 4 (the entire S7 was dorsal to the IPV, and A7 ran on the dorsal side of the Bba after branching from the Aba) in 99, and pattern 5 (although the entire S7 was dorsal to the IPV, A7 either ran on the dorsal side of the Bba after branching from the Aba or ran on the ventral side of the Bba after branching from the Aba) in 24.
Because segmentectomy of the basal segment is anticipated to become more frequent, the results of this study may serve as useful reference data.
我们在计算机断层扫描上研究了B7和A7的分支模式。
研究人群为2150例患者。分支模式分为5种类型。
1373例患者中发现模式1（整个S7段位于肺下静脉（IPV）腹侧，A7从基底段动脉（Aba）分支并走行于基底支气管（Bba）腹侧）；226例患者中发现模式2（B7呈双分支进入IPV的背侧和腹侧。A7从Aba分支后在IPV背侧流入肺内，并在Bba背侧走行）；170例患者中发现模式3（B7呈双分支进入IPV的背侧和腹侧。A7从Aba分支后在Bba腹侧走行）；99例患者中发现模式4（整个S7位于IPV背侧，A7从Aba分支后在Bba背侧走行）；24例患者中发现模式5（尽管整个S7位于IPV背侧，但A7要么从Aba分支后在Bba背侧走行，要么从Aba分支后在Bba腹侧走行）。
由于预计基底段切除术会更频繁地进行，本研究结果可作为有用的参考数据。
