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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