Retrospective Cohort Study
Copyright ©The Author(s) 2020.
World J Gastrointest Pharmacol Ther. Jun 9, 2020; 11(2): 25-39
Published online Jun 9, 2020. doi: 10.4292/wjgpt.v11.i2.25
Table 1 Clinical and pathological characteristics of pancreatic ductal adenocarcinoma patients
FeatureLevelTotal cohortSubcohort
Invasive IPMNNon-IPMN associated PDACP value
Median (IQR)
Age (in yr)67.6 (60.0, 74.8)70.0 (64.1, 75.5)66.7 (59.4, 74.0)0.003
Tumor size (in cm)3.5 (2.5, 5.0)3.0 (2.0, 4.5)3.6 (2.5, 5.2)0.012
Median (95%CI)
PFS (in mo)21.0 (17.0, 27.0)NR (47.0, NR)17.0 (13.0, 22.0)< 0.001
OS (in mo)21.0 (19.0, 24.0)60.0 (28.0, 69.0)19.0 (18.0, 22.0)< 0.001
n (%)
Gender (male/female)Female243 (53.5)61 (53.0)182 (53.7)0.991
Male211 (46.5)54 (47.0)157 (46.3)
Tumor differentiationWell41 (9.0)15 (13.4)26 (7.9)0.103
Moderate271 (59.7)71 (63.4)200 (61.0)
Poor128 (28.2)26 (23.2)102 (31.1)
AJCC 8th ed staging systemT176 (16.7)32 (27.8)44 (13.0)0.003
T2202 (44.5)46 (40.0)156 (46.2)
T3166 (36.6)36 (31.3)130 (38.5)
AJCC 8th ed staging systemN0216 (47.6)69 (60.0)147 (43.4)0.004
N1181 (39.9)31 (27.0)150 (44.2)
N257 (12.6)15 (13.0)42 (12.4)
Lymphovascular invasionPositive219 (48.2)44 (38.3)175 (51.6)0.011
Negative219 (48.2)69 (60.0)150 (44.2)
Indetermi-nant16 (3.5)2 (1.7)14 (4.1)
Perineural invasionPositive366 (80.6)80 (69.6)286 (84.4)0.001
Negative82 (18.1)34 (29.6)48 (14.2)
Indetermi-nant6 (1.3)1 (0.9)5 (1.5)
Recurrence/metastasisPresent218 (48.0)43 (37.4)175 (51.6)0.015
Absent236 (52.0)72 (62.6)164 (48.4)
Splenic parenchymal invasionPresent25 (5.5)2 (1.7)23 (6.9)0.067
Absent425 (93.6)113 (98.3)312 (93.1)
Table 2 Univariate and multivariable analysis for progression-free survival and overall survival in invasive intraductal papillary mucinous neoplasm
FeatureLevelPFS
OS
HR (95%CI), P value
Gender1.67 (0.91-3.05), P = 0.10-1.33 (0.85-2.08), P = 0.22-
Age0.99 (0.96-1.02), P = 0.52-1.01 (0.98-1.03), P = 0.54-
Tumor size1.18 (1.05-1.32), P = 0.01-1.10 (1.00-1.21), P = 0.04-
Tumor differentiationWell----
Moderate2.71 (0.82-8.91), P = 0.1012290265.82 (0.00-Inf), P = 1.001.04 (0.53-2.02), P = 0.921.62 (0.34-7.66), P = 0.55
Poor3.88 (1.06-14.27), P = 0.042274054.50 (0.00-Inf), P = 1.002.31 (1.10-4.86), P = 0.031.78 (0.15-20.67), P = 0.64
Positive lymph node1.19 (1.05-1.35), P = 0.01-1.19 (1.07-1.31), P < 0.01-
T stage (AJCC 8th edition staging manual)T1----
T22.69 (1.14-6.37), P = 0.020.81 (0.07-9.31), P = 0.871.65 (0.92-2.97), P = 0.090.89 (0.09-8.48), P = 0.92
T33.48 (1.42-8.51), P = 0.015.29 (0.44-62.97), P = 0.192.28 (1.23-4.24), P = 0.0126.22 (2.13-322.77), P = 0.01
N stage (AJCC 8th edition staging manual)N0----
N12.03 (1.03-4.02), P = 0.0413.78 (1.15-165.63), P = 0.041.58 (0.93-2.67), P = 0.091.17 (0.24-5.70), P = 0.85
N23.65 (1.60-8.34), P < 0.0129.12 (0.87-979.78), P = 0.062.52 (1.36-4.65), P < 0.011.63 (0.10-27.11), P = 0.73
Lymphovascular invasion2.12 (1.16-3.90), P = 0.020.31 (0.04-2.41), P = 0.261.43 (0.90-2.28), P = 0.13-
Perineural invasion1.99 (0.98-4.04), P = 0.06-2.45 (1.39-4.33), P < 0.012.67 (0.54-13.22), P = 0.23
Splenic artery invasion5.30 (1.41-19.94), P = 0.012.44 (0.10-62.16), P = 0.591.70 (0.59-4.88), P = 0.32-
Splenic vein invasion18.69 (4.57-76.48), P < 0.015.28 (0.22-129.25), P = 0.312.66 (1.08-6.55), P = 0.035.62 (0.61-51.99), P = 0.13
Positive margin1.25 (0.30-5.19), P = 0.76-3.14 (1.49-6.62), P < 0.010.00 (0.00-Inf), P = 1.00
Splenic parenchyma invasion14.93 (1.83-121.81), P = 0.011.00 (1.00-1.00), P = NaN1.23 (0.17-8.87), P = 0.84-
Adjuvant radiation therapy0.97 (0.52-1.81), P = 0.92-0.81 (0.48-1.37), P = 0.43-
Adjuvant chemotherapy2.50 (0.89-7.00), P = 0.08-0.69 (0.39-1.22), P = 0.20-
Radiographic splenic artery invasion2.12 (0.85-5.29), P = 0.11-1.45 (0.59-3.56), P = 0.41-
Radiographic splenic vein invasion2.27 (1.04-4.94), P = 0.042.88 (0.33-24.96), P = 0.341.46 (0.68-3.13), P = 0.33-
Table 3 Univariate and multivariable analysis for progression-free survival and overall survival in non-intraductal papillary mucinous neoplasm pancreatic ductal adenocarcinoma
FeatureLevelPFS
OS
HR (95%CI), P value
Gender0.89 (0.66-1.20), P = 0.43-1.05 (0.82-1.35), P = 0.69-
Age0.99 (0.98-1.01), P = 0.29-1.01 (1.00-1.03), P = 0.051.00 (0.98-1.02), P = 0.93
Tumor size1.07 (0.99-1.15), P = 0.09-1.08 (1.02-1.16), P = 0.01-
Tumor differentiationWell----
Moderate1.11 (0.64-1.91), P = 0.71-1.33 (0.78-2.27), P = 0.291.56 (0.65-3.78), P = 0.32
Poor1.21 (0.68-2.14), P = 0.52-1.72 (0.99-2.98), P = 0.052.23 (0.90-5.53), P = 0.08
Positive lymph node1.06 (1.01-1.12), P = 0.03-1.08 (1.03-1.13), P < 0.01-
T stage (AJCC 8th edition staging manual)T1----
T21.39 (0.83-2.31), P = 0.211.22 (0.73-2.05), P = 0.450.97 (0.64-1.46), P = 0.871.12 (0.57-2.20), P = 0.73
T31.56 (0.92-2.62), P = 0.101.19 (0.68-2.07), P = 0.541.33 (0.88-2.03), P = 0.180.80 (0.39-1.64), P = 0.54
N stage (AJCC 8th edition staging manual)N0----
N11.73 (1.25-2.39), P < 0.011.59 (1.09-2.32), P = 0.021.75 (1.33-2.32), P < 0.012.54 (1.41-4.58), P < 0.01
N21.57 (0.96-2.56), P = 0.071.47 (0.82-2.63), P = 0.201.83 (1.23-2.72), P < 0.012.45 (0.92-6.51), P = 0.07
Lymphovascular invasion1.43 (1.05-1.95), P = 0.021.07 (0.73-1.56), P = 0.741.46 (1.12-1.89), P < 0.010.82 (0.45-1.49), P = 0.51
Perineural invasion1.16 (0.76-1.78), P = 0.48-1.19 (0.83-1.73), P = 0.35-
Splenic artery invasion1.41 (0.71-2.80), P = 0.33-1.38 (0.81-2.36), P = 0.24-
Splenic vein invasion1.35 (0.82-2.23), P = 0.24-2.09 (1.44-3.03), P < 0.011.59 (0.83-3.02), P = 0.16
Positive margin0.78 (0.43-1.40), P = 0.40-1.20 (0.78-1.82), P = 0.41-
Splenic invasion1.65 (0.95-2.85), P = 0.07-1.32 (0.82-2.11), P = 0.25-
Adjuvant radiation therapy0.93 (0.69-1.27), P = 0.66-0.85 (0.64-1.12), P = 0.25-
Adjuvant chemotherapy1.45 (0.90-2.34), P = 0.13-0.51 (0.37-0.71), P < 0.010.34 (0.20-0.58), P < 0.01
Radiographic splenic artery invasion1.27 (0.87-1.84), P = 0.21-1.13 (0.81-1.59), P = 0.47-
Radiographic splenic vein invasion1.26 (0.88-1.80), P = 0.20-1.51 (1.10-2.07), P = 0.011.08 (0.65-1.80), P = 0.75

  • Citation: Yin F, Saad M, Xie H, Lin J, Jackson CR, Ren B, Lawson C, Karamchandani DM, Bernabeu BQ, Jiang W, Dhir T, Zheng R, Schultz CW, Zhang D, Thomas CL, Zhang X, Lai J, Schild M, Zhang X, Liu X. Validation of American Joint Committee on Cancer 8th edition of TNM staging in resected distal pancreatic cancer. World J Gastrointest Pharmacol Ther 2020; 11(2): 25-39
  • URL: https://www.wjgnet.com/2150-5349/full/v11/i2/25.htm
  • DOI: https://dx.doi.org/10.4292/wjgpt.v11.i2.25