Table 1. Characteristics of 147 patients with stage IB upper lobe NSCLC.
| Number(%) | Right upper lobe |
Left upper lobe |
P | |
|---|---|---|---|---|
| Number(%) | Number(%) | |||
| Age, years | 0.30 | |||
| <58 | 51(34.7) | 30(39.5) | 21(29.6) | |
| 58−68 | 56(38.1) | 29(38.2) | 27(38.0) | |
| >68 | 40(27.2) | 17(22.4) | 23(32.4) | |
| Sex | 0.09 | |||
| Female | 64(43.5) | 28(36.8) | 36(50.7) | |
| Male | 83(56.5) | 48(63.2) | 35(49.3) | |
| Histological type | 0.77 | |||
| Adenocarcinoma | 96(65.3) | 50(65.8) | 46(64.8) | |
| Squamous | 37(25.2) | 20(26.3) | 17(23.9) | |
| Adenosquamous | 14(9.5) | 6(7.9) | 8(11.3) | |
| Grade of differentiation | 0.82 | |||
| Well | 74(50.3) | 41(53.9) | 33(46.5) | |
| Moderate | 53(36.1) | 26(34.2) | 27(38.0) | |
| Poor | 13(8.8) | 6(7.9) | 7(9.9) | |
| Unknown | 7(4.8) | 3(3.9) | 4(5.6) | |
| Visceral pleura invasion | 0.73 | |||
| Present | 129(87.8) | 66(86.8) | 63(88.7) | |
| Absent | 18(12.2) | 10(13.2) | 8(11.3) | |
| Tumor size, cm | 0.09 | |||
| ≤3.0 | 60(40.8) | 37(48.7) | 23(32.4) | |
| 3.1−5.0 | 63(42.9) | 30(39.5) | 33(46.5) | |
| >5.0 | 24(16.3) | 9(11.8) | 15(21.1) | |
| Number of removed LN | 0.22 | |||
| <7 | 112(76.2) | 52(68.4) | 60(84.5) | |
| ≥7 | 35(23.8) | 24(31.6) | 11(15.5) | |
| Number of removed MLN | 0.06 | |||
| <4 | 106(72.1) | 47(61.8) | 59(83.1) | |
| ≥4 | 41(27.9) | 29(38.2) | 12(16.9) | |
| Number of removed SMLNS | 0.004 | |||
| <2 | 55(37.4) | 20(26.3) | 35(49.3) | |
| ≥2 | 92(62.6) | 56(73.7) | 36(50.7) |
LN=lymph nodes; MLN=mediastinal lymph nodes; SMLNS=superior mediastinal lymph node stations