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Table 1 Patient characteristics (n = 34)

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

Characteristic Patients
Age (Median) 56.5
Sex
 Male 25 (74 %)
 Female 9 (27 %)
Location
 Tonsil 17 (50 %)
 Base of Tongue 16 (47 %)
 Soft Palate 1 (3 %)
Smoking
 Smoker 21 (62 %)
 Non-Smoker 13 (38 %)
p16
 Positive 28 (82 %)
 Negative 3 (9 %)
 Undetermined 3 (9 %)
Preoperative Tumor Size (median, n = 25) 2.20 cm
Postoperative Tumor Size (median, n = 31) 2.20 cm
Preoperative Node Size (median, n = 23) 3.00 cm
Postoperative Node Size (median, n = 19) 3.50 cm
Preoperative T Stage
 T0 3 (9 %)
 T1 7 (21 %)
 T2 21 (62 %)
 T3 2 (6 %)
 T4 0 (0 %)
 Unknown 1 (3 %)
Postoperative T Stage
 T1 12 (35 %)
 T2 17 (50 %)
 T3 4 (12 %)
 T4 0 (0 %)
 Unknown 1 (3 %)
Preoperative N Stage
 N0 10 (29 %)
 N1 9 (27 %)
 N2 14 (41 %)
 N3 0 (0 %)
 Unknown 1 (3 %)
Postoperative N Stage
 N0 13 (38 %)
 N1 3 (9 %)
 N2 17 (50 %)
 N3 1 (3 %)
Preoperative Overall Stage
 Stage I 2 (6 %)
 Stage II 6 (18 %)
 Stage III 11 (33 %)
 Stage IVA 14 (42 %)
 Unknown 1 (3 %)
Postoperative Overall Stage
 Stage I 4 (12 %)
 Stage II 5 (15 %)
 Stage III 6 (18 %)
 Stage IVA 18 (53 %)
 Unknown 1 (3 %)
Lymph Nodes
 Positive node on imaging 23 (68 %)
 Neck dissection performed 29 (85 %)
  Positive node on dissection 19 (56 %)
  ECE present 15 (44 %)
  No ECE present 14 (41 %)
Extent of ECE (median, n = 13) 2.00 mm
ECE Lewis Grade
 0 1 (3 %)
 1 4 (12 %)
 2 7 (21 %)
 3 7 (21 %)
 4 1 (3 %)
Surgical Margins
 Positive 4 (12 %)
 Negative 30 (88 %)
  Distance to negative margins (median) 3.00 mm
Adjuvant Therapy
 None 10 (29 %)
 Radiation therapy alone 7 (21 %)
 Chemoradiation therapy 17 (50 %)
  1. ECE indicates extracapsular extension