Pretreatment predictors of adjuvant chemoradiation in patients receiving transoral robotic surgery for squamous cell carcinoma of the oropharynx: a case control study

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)	2.18 cm	2.13 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)	1.90 cm	2.26 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)	3.23 cm	1.88 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)	3.83 cm	2.38 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 %)

ISSN: 2059-7347