Skip to main content

Table 3 The numbers of branches of subsegmental pulmonary veins found to course within subsegments or between subsegments in 103 patients and a comparison of the names of the pulmonary veins according to the nomenclature systems proposed by Boyden [19, 20], Yamashita [18], Arai [21], and Nomori and Okada [22]

From: Anatomical analysis of the left upper lobe of lung on three-dimensional images with focusing the branching pattern of the subsegmental veins

Sub-segment S1 + 2a S1 + 2b S1 + 2c S3a S3b S3c S4a S4b S5a S5b LLL Total
V1l     55         55
    Y         
S1 + 2a 38 92 17 6 8 83 2 0 0 0   246
B,Y B,Y,A,N    B Y,A,N       
S1 + 2b   21 92 3 0 2 0 1 0 0   119
   B,Y,A,N          
S1 + 2c    17 41 1 1 57 2 1 0 3 123
    B,A,N         
S3a     4 39 8 48 14 2 0 2 117
     Y,N   B,A B     
S3b      11 85 16 66 24 0   202
     B Y,A,N N Y,A     
S3c       14 1 3 1 0   19
S4a        5 46 37 7 3 98
        Y,N Y,A B   
S4b         22 73 9 1 105
         B,Y,A,N B   
S5a          6 52 0 58
          Y,A,N   
S5b           3 1 4
Total 38 113 126 109 59 193 129 154 144 71 10 1146
  1. V1l: l means lateral and was separately counted, because this subsegmental pulmonary vein courses between the region involving S1 + 2 a, b, and c, and S3a. The sites of segmental veins are marked with the nomenclature systems proposed by Boyden (B), Yamashita (Y), Arai (A), and Nomori and Okada (N). The abbreviation “S1 + 2” indicates the apicoposterior segment; “a”, apical; “b” subapical posterior; “c”, horizontal. “S3” indicates the anterior segment; “a”, lateral; “b”, medial; “c”, superior. “S4” indicates the lingular superior segment; “a”, lateral; “b”, anterior. “S5” indicates the lingular; “a”, superior; “b”, inferior. LLL indicates the left lower lobe