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Table 1 Patient, treatment (A), and tumor (B) characteristics (N = 50)

From: Analysis of PET parameters as prognosticators of survival and tumor extent in Oropharyngeal Cancer treated with surgery and postoperative radiotherapy

Characteristic N (%) or median (range)
(A)
 Patient characteristics
  Age 59 (29–75)
 Primary site
  Tonsil 41 (82)
  Base of tongue 7 (14)
  Soft palate 2 (4)
 Sex
  Male 45 (90)
  Female 5 (10)
 Smoking history
  Non-smoker 17 (34)
  Smoker ≤10 PPY 5 (10)
  Smoker > 10 PPY 28 (56)
 Treatment characteristics
 Primary surgery
  Wide excision 26 (52)
  Transoral robotic surgery 24 (48)
 Ipsilateral neck dissection
  Radical neck dissection 4 (8)
  Modified radical neck dissection 46 (92)
 Contralateral neck dissection
  Modified radical neck dissection 4 (8)
  Selective neck dissection 37 (74)
  Not-done 9 (18)
 Adjuvant treatment
  Chemoradiotherapy 35 (70)
  Radiotherapy 15 (30)
(B)
 T stage
  T1 24 (48)
  T2 24 (48)
  T3-T4 2 (4)
 Depth of invasion (mm) 9 (7–37)
 LN number
  1–4 36 (72)
   > 4 14 (28)
 Largest LN size (cm)
   ≤ 3 26 (52)
   > 3 but ≤6 19 (38)
   > 6 1 (2)
  N/A 4 (8)
 Extranodal extension
  Negative 21 (42)
  Positive 29 (58)
 Tumor grade
  Well to moderately 30 (60)
  Poorly 16 (32)
  N/A 4 (8)
 HPV status
  Negative 18 (36)
  Positive 27 (54)
  N/A 5 (10)
 Surgical margin
  Negative 35 (70)
  Positive or close 15 (30)
 Lymphatic invasion
  Yes 29 (58)
  No 21 (42)
 Vascular invasion
  Yes 4 (8)
  No 46 (92)
 Perineural invasion
  Yes 5 (10)
  No 45 (90)
  1. Abbreviation: PPY packs per year, LN lymph node, N/A not-available, HPV human papilloma virus