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Postoperative radiotherapy for patients with completely resected pathological stage IIIA-N2 non-small cell lung cancer: a preferential benefit for squamous cell carcinoma


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Figure 1

The survival of 194 lung adenocarcinoma (LADC) cases with or without postoperative radiotherapy (PORT). (A) Overall survival (OS) of PORT and non-PORT patients. (B) OS of 85 lung squamous cell carcinoma (LSCC) cases with PORT or non-PORT.
The survival of 194 lung adenocarcinoma (LADC) cases with or without postoperative radiotherapy (PORT). (A) Overall survival (OS) of PORT and non-PORT patients. (B) OS of 85 lung squamous cell carcinoma (LSCC) cases with PORT or non-PORT.

Figure 2

The effect of postoperative radiotherapy (PORT) on the survival of 85 lung squamous cell carcinoma (LSCC) patients. (A) Overall survival (OS). (B) loco-regional recurrence-free survival (LRFS). (C) Distant metastasis-free survival (DMFS). PORT alone was a significant positive prognostic factor for OS (p = 0.017) (A); LRFS (p = 0.006 (B); and DMFS (p = 0.013) (C).
The effect of postoperative radiotherapy (PORT) on the survival of 85 lung squamous cell carcinoma (LSCC) patients. (A) Overall survival (OS). (B) loco-regional recurrence-free survival (LRFS). (C) Distant metastasis-free survival (DMFS). PORT alone was a significant positive prognostic factor for OS (p = 0.017) (A); LRFS (p = 0.006 (B); and DMFS (p = 0.013) (C).

Univariate analyses of the factors affecting overall survival (OS), loco-regional recurrence-free survival (LRFS) and distant metastasis-free survival (DMFS) of lung squamous cell carcinoma (LADC) patients (N = 194)

CharacteristicsNo.OSLRFSDMFS
5-year OS, %P5-year LRFS, %P5-year DMFS, %P
Gender0.0710.0850.139
            Female9648.246.944.1
            Male9839.637.130.6
Age(yr)0.7510.8110.494
            < 6513943.641.634.5
            ≥ 655545.042.841.3
Smoking Index0.001*0.001*0.006*
            < 40012750.449.444.5
            ≥ 4006731.027.422.7
Types of surgery0.4680.1580.319
            Lobectomy17844.142.336.5
            Pneumonectomy1641.738.537.5
Pathologic T stage0.032*0.020*0.001*
            pT1–216646.344.040.4
            pT32829.528.015.5
Types of pN20.001*0.002*0.000*
            a14660.958.358.8
            a26237.938.837.8
            b8638.735.422.5
N of positive nodes0.000*0.000*0.000*
            1–38756.654.753.4
            ≥ 410733.331.420.4
PLNR0.000*0.001*0.000*
            < 20%8054.852.751.8
            ≥ 20%11435.734.026.9
N of N2 stations0.001*0.002*0.001*
            Single4660.958.358.8
            Multiple14838.336.929.0
POCT0.1690.2800.541
            No2434.436.537.5
            Yes17044.943.036.6
PORT0.9480.7230.440
            No15245.043.038.8
            Yes4240.040.028.7

Multivariate analyses of the factors affecting overall survival (OS), loco-regional recurrence-free survival (LRFS) and distant metastasis-free survival (DMFS) of lung adenocarcinoma (LSCC) patients (N = 85)

CharacteristicsOSLRFSDMFS
HR (95% CI)PHR(95% CI)PHR (95% CI)P
Smoking Index0.7890.8230.563
            < 400111
            ≥ 4000.905(0.436–1.880)0.922(0.454–1.874)0.806(0.389–1.672)
Pathologic T stage0.2080.1490.151
            pT1–2111
            pT31.436(0.817–2.522)1.524(0.860–2.701)1.522(0.858–2.699)
N of positive nodes0.2570.2960.664
            1–3111
            ≥ 41.618(0.704–3.715)1.556(0.679–3.563)1.194(0.537–2.657)
PLNR0.4400.4540.330
            < 20%111
            ≥ 20%1.322(0.650–2.689)1.308(0.648–2.643)1.428(0.697–2.925)
N of N2 stations0.9220.9630.813
            Single111
            Multiple1.043(0.447–2.436)0.979(0.409–2.343)0.903(0.385–2.114)
POCT0.1270.2240.496
            No111
            Yes0.523(0.227–1.202)0.595(0.258–1.374)0.751(0.328–1.715)
PORT0.017*0.006*0.013*
            No111
            Yes0.364(0.159–1.832)0.308(0.133–0.712)0.349(0.152–0.802)

Univariate analyses of the factors affecting overall survival (OS), loco-regional recurrence-free survival (LRFS) and distant metastasis-free survival (DMFS) of lung adenocarcinoma (LSCC) patients (N = 85)

CharacteristicsNoOSLRFSDMFS
5-year OS, %P5-year LRFS, %P5-year DMFS, %P
Gender0.6700.7840.762
            Female742.942.942.9
            Male7843.239.141.3
Age(yr)0.3620.6170.447
            < 656046.440.843.9
            ≥ 652536.036.036.0
Smoking Index0.7130.6590.767
            < 4001855.644.450.0
            ≥ 4006739.637.839.0
Type of surgery0.2830.3750.498
            Lobectomy5747.642.445.5
            Pneumonectomy2834.133.233.9
Pathologic T stage0.3410.2890.237
            pT1–25646.444.147.1
            pT32937.030.331.8
Type of N20.6250.5960.882
            a13150.644.444.8
            a22641.337.841.2
            b2835.234.338.1
N of positive nodes0.1150.1610.431
            1–34549.245.246.1
            ≥ 44036.734.136.1
PLNR0.1520.1540.265
            < 20%5148.743.846.9
            ≥ 20%3434.433.033.1
N2 stations0.3670.3630.654
            Single3150.644.444.8
            Multiple5438.936.939.7
POCT0.3160.3710.525
            No1330.830.830.8
            Yes7245.340.943.5
PORT0.026*0.008**0.018*
            No6637.732.535.3
            Yes1963.263.263.2

Multivariate analyses of the factors affecting overall survival (OS), loco-regional recurrence-free survival (LRFS) and distant metastasis-free survival (DMFS) of lung squamous cell carcinoma (LADC) patients (N = 194)

CharacteristicsOSLRFSDMFS
HR (95% CI)PHR(95% CI)PHR (95% CI)P
Smoking Index0.000*0.000*0.005*
            < 400111
            ≥ 4002.172(1.471–3.207)2.098(1.421–3.099)1.739(1.181–2.560)
Pathologic T stage0.0740.1560.002*
            pT1–2111
            pT31.560(0.958–2.542)1.428(0.873–2.337)2.120(1.308–3.435)
N of positive nodes0.2550.2340.134
            1–3111
            ≥ 41.403(0.783–2.512)1.441(0.789–2.632)1.624(0.861–3.062)
PLNR0.3920.4350.471
            < 20%111
            ≥ 20%1.313(0.704–2.447)1.291(0.680–2.452)1.283(0.651–2.528)
N of N2 stations0.015*0.046*0.141
            Single111
            Multiple2.065(1.148–3.714)1.818(1.010–3.272)1.565(0.863–2.839)
POCT0.004*0.031*0.047*
            No111
            Yes0.417(0.230–0.757)0.524(0.291–0.942)0.554(0.310–0.992)
PORT0.7590.7370.444
            No111
            Yes1.074(0.680–1.697)0.924(0.584–1.463)1.196(0.756–1.891)

Patient characteristics

CharacteristicLADC ( N = 194 )LSCC ( N = 85 )
Total, n (%)Non-PORT, n (%)PORT, n (%)PTotal, n (%)Non-PORT, n (%)PORT, n (%)P
Gender0.2620.593
            Female96(49.5)72(47.4)24(57.1)7(8.2)6(9.1)1(5.3)
            Male98(50.5)80(52.6)18(42.9)78(91.8)60(90.9)18(94.7)
Age (yr)0.0580.814
            < 65139(71.6)104(68.4)35(83.3)60(70.6)47(71.2)13(68.4)
            ≥ 6555(28.4)48(31.6)7(16.7)25(29.4)19(28.8)6(31.6)
Smoking Index0.1990.058
            < 400127(65.5)96(63.2)31(73.8)18(21.2)11(16.7)7(36.8)
            ≥ 40067(34.5)56(36.8)11(26.2)67(78.8)55(83.3)12(63.2)
Type of surgery0.0280.211
            Lobectomy178(91.8)136(89.5)42(100)57(84.0)42(63.6)15(78.9)
            Pneumonectomy16(8.2)16(10.5)0(0.0)28(16.0)24(36.4)4(21.1)
Pathological T stage0.0440.167
            T1–2166(85.6)126(82.9)40(95.2)56(65.9)46(69.7)10(52.6)
            T328(14.4)26(17.1)2(4.8)29(34.1)20(30.3)9(47.4)
Type of pN20.2280.989
            a146(23.7)38(25.0)8(19.0)31(36.5)24(36.4)7(36.8)
            a262(32.0)44(28.9)18(42.9)26(30.6)20(30.3)64(31.6)
            b86(44.3)70(46.1)16(38.1)28(32.9)22(33.3)6(31.6)
N of positive nodes0.0900.581
            1–387(44.8)73(48.0)14(33.3)45(52.9)36 (54.5)9(47.4)
            ≥ 4107(55.2)79(52.0)28(66.7)40(47.1)30(45.5)10(52.6)
PLNR0.0600.832
            < 20%80(41.2)68(44.7)12(28.6)51(60.0)40(60.6)11(57.9)
            ≥ 20%114(58.8)84(55.3)30(71.4)34(40.0)26(39.4)8(42.1)
N of N2 stations0.4220.970
            Single46(23.7)38(25.0)8(19.0)31(36.5)24(36.4)7(36.8)
            Multiple148(76.3)114(75.0)34(81.0)54(63.5)42(63.6)12(63.2)
POCT0.0260.512
            No24(12.4)23(15.1)1(2.4)13(15.3)11(16.7)2(10.5)
            Yes170(87.6)129(84.9)41(97.6)72(84.7)55(83.3)17(89.5)
eISSN:
1581-3207
Idioma:
Inglés
Calendario de la edición:
4 veces al año
Temas de la revista:
Medicine, Clinical Medicine, Radiology, Internal Medicine, Haematology, Oncology