Table 1 Analysis of demographic data and tumor factors
From: Factors favoring neck metastasis in patients underwent laryngectomy for laryngeal cancer
| Â | Total cases (n=138) | Negative node group (n=112) | Positive node group (n=26) | P value |
|---|---|---|---|---|
Age/years | ||||
 Mean (SD) | 59(9) | 59 (9) | 58 (7) | 0.5 |
Gender | ||||
 Male | 131 | 106 | 25 | 0.7 |
 Female | 7 | 6 | 1 | |
Site of tumor | ||||
 Subglottic | 7 | 7 | 0 | 0.03 |
 Glottic | 52 | 45 | 7 | |
 Supraglottic | 30 | 19 | 11 | |
 Transglottic | 49 | 41 | 8 | |
T stage | Â | Â | Â | Â |
 1 | 3 | 1 | 2 | 0.1 |
 2 | 10 | 7 | 3 | |
 3 | 103 | 86 | 17 | |
 4 | 22 | 18 | 4 | |
Side of tumor | ||||
 Midline | 46 | 36 | 10 | 0.8 |
 Right | 51 | 42 | 9 | |
 Left | 41 | 34 | 7 | |
Midline cross | ||||
 No | 55 | 49 | 6 | 0.05 |
 Yes | 83 | 63 | 20 | |
Size of tumor/cm | ||||
 Mean (SD) | 3.6 (1.3) | 3.6 (1.3) | 3.8 (1.2) | 0.6 |
Tumor shape | ||||
 Mass | 92 | 74 | 18 | 0.8 |
 Ulcer | 46 | 38 | 8 | |
Thyroid cartilage infiltration | ||||
 No | 56 | 47 | 9 | 0.5 |
 Yes | 82 | 65 | 17 | |
Tumor type | ||||
 Squamous cell carcinoma | 135 | 109 | 26 | 1 |
 Mucoepidermoid carcinoma | 3 | 3 | 0 | - |
Tumor grade | ||||
 Undifferentiated | 3 | 1 | 2 | 0.1 |
 Grade 1 | 4 | 4 | 0 | |
 Grade 2 | 124 | 102 | 22 | |
 Grade 3 | 7 | 5 | 2 | |