Table 3 Association between patient characteristics and nodal extracapsular extension (ECE) (n = 29)
Characteristic | ECE | No ECE | P Value |
|---|---|---|---|
Age (Mean) | 55.5 | 58.4 | .35 |
Sex | |||
 Male | 12 (55 %) | 10 (46 %) | .68 |
 Female | 3 (43 %) | 4 (57 %) |  |
Location | |||
 Tonsil | 8 (62 %) | 5 (39 %) | .48 |
 Base of Tongue | 7 (47 %) | 8 (53 %) |  |
Smoking | |||
 Smoker | 9 (53 %) | 8 (47 %) | > .99 |
 Non-Smoker | 6 (50 %) | 6 (50 %) |  |
p16 | |||
 Positive | 14 (61 %) | 9 (39 %) | .56 |
 Negative | 1 (33 %) | 2 (67 %) |  |
Preoperative Tumor Size (Mean) | 2.18Â cm | 2.13Â cm | .86 |
Preoperative Tumor Size | |||
Median = 2.20 cm |  |  | > .99 |
 Less than median size | 6 (55 %) | 5 (46 %) |  |
 Greater than or equal to median size | 4 (50 %) | 4 (50 %) |  |
Postoperative Tumor Size (Mean) | 1.90Â cm | 2.26Â cm | .33 |
Postoperative Tumor Size | |||
Median = 2.20 cm |  |  | > .99 |
 Less than median size | 8 (53 %) | 7 (47 %) |  |
 Greater than or equal to median size | 6 (50 %) | 6 (50 %) |  |
Preoperative Node Size (Mean) | 3.23Â cm | 1.88Â cm | .002 |
Preoperative Node Size | |||
Median = 3.00 cm |  |  | .046 |
 Less than median size | 4 (44 %) | 5 (56 %) |  |
 Greater than or equal to median size | 11 (92 %) | 1 (8 %) |  |
Postoperative Node Size (Mean) | 3.83Â cm | 2.38Â cm | .03 |
Postoperative Node Size | |||
Median = 3.50 cm |  |  | .02 |
 Less than median size | 4 (50 %) | 4 (50 %) |  |
 Greater than or equal to median size | 11 (100 %) | 0 (0 %) |  |
Number of Positive Nodes on Imaging | |||
 1 | 10 (71 %) | 4 (29 %) | > .99 |
 2 or more | 5 (71 %) | 2 (29 %) |  |
Number of Positive Nodes on Dissection | |||
 1 | 5 (71 %) | 2 (29 %) | .60 |
 2 or more | 10 (83 %) | 2 (17 %) |  |
ECE on Imaging | |||
 Positive | 8 (89 %) | 1 (11 %) | .01 |
 Negative | 7 (35 %) | 13 (65 %) |  |
Node Necrosis on Imaging | |||
 Positive | 12 (86 %) | 2 (14 %) | .001 |
 Negative | 3 (20 %) | 12 (80 %) |  |