A technique for combined resection of S 2 b (horizontal subsegment of the posterior segment) and S 3 a (lateral subsegment of the anterior segment) of the right upper lobe of the lung is presented. Although both the S 2 b and S 3 a should be resected from the interlobar fissure, an approach for the artery and bronchus of S 3 a (A 3 a and B 3 a, respectively) is easier from the ventral side of the hilum rather than from the interlobar fissure, because B 3 runs in back of V 2 at the interlobar fissure. To resolve this contradiction, we devised a procedure as follows: (1) A 2 b and B 2 b are cut at the interlobar fissure; (2) A 3 a and B 3 a are cut from the ventral side of hilum; (3) the peripheral stumps of A 3 a and B 3 a are transferred to the interlobar fissure; and (4) subsegments of S 3 a and S 2 b are resected with the peripheral stumps of A 2 b, B 2 b, A 3 a, and B 3 a from the side of the interlobar fissure. We believe this procedure makes the combined resection of S 2 b and S 3 a easy.
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