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Table 1 Patients’ characteristics

From: nPTD classification: an updated classification of gastric cancer location for function preserving gastrectomy based on physiological lymphatic flow

Number of patients Total Blue dye ICG p-value
416 323 93 n.s.
 Age (year)
  median (range) 64 (26–86) 62 (26–86) 70 (42–84) n.s.
 Sex
  Male / Female 278 / 138 220 / 103 58 / 35 n.s.
 Location of tumor
  U / UM·MU / M / L 54/13/215/134 36/7/171/109 18/6/44/25 0.026
 Size of tumor
  mm (long axis) 22 (2–50) 25 (2–50) 25 (8–50) n.s.
 Macroscopic type
  elevated / depressed 97 / 319 77 / 246 20 / 73 n.s.
 Pathological depth
  T1a(M) / T1b(SM) / T2(MP) 210 / 166 / 40 171 / 121 / 31 39 / 45 / 9 n.s.
 Pathological type
  differentiated / undifferentiated 243 / 173 184 / 139 59 / 34 n.s.
 Surgical procedures
  standard / modified 140 / 276 108 / 215 32 / 61 n.s.
 Nodal metastatic status
  SN(+) nonSN(−) 20 13 7  
  SN(+) nonSN(+) 16 11 5  
  SN(−) nonSN(+) 6 5 1  
  SN(−) nonSN(−) 374 294 80  
  1. Statistical tests were performed between the blue dye and ICG groups
  2. SN sentinel node