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Table 1 Clinical and histological characteristics of the patients ( n = 51)

From: Prognostic factors affecting the clinical outcome of carcinoma ex pleomorphic adenoma in the major salivary gland

Characteristics

n

Percentage

Median age (range)

57 (23–86)

 

Sex

  

  Male

36

70.6

  Female

15

29.4

Primary site

  

  Parotid gland

27

52.9

  Submandibular gland

23

45.1

  Sublingual gland

1

2

Pleomorphic adenoma operation history

  

  No

41

80.4

  Yes

10

19.6

Histological grade

  

  Low

15

29.4

  Intermediate

19

37.3

  High

17

33.3

Invasiveness

  

  Non-invasive

9

17.6

  Minimally invasive

3

5.9

  Invasive

39

76.5

Carcinomatous component

  

  <50%

7

13.7

  >50%

44

86.3

T stage

  

  1

10

19.6

  2

14

27.5

  3

8

15.7

  4

19

37.3

Lymph node involvement

  

  Negative

34

66.7

  Positive

17

33.3

Clinical stage

  

  I

8

15.7

  II

9

17.6

  III

8

15.7

  IV

26

51.0

Perineural invasion

  

  Negative

28

54.9

  Positive

23

45.1

Postoperative radiotherapy

  

  No

30

58.8

  Yes

21

41.2

Postoperative chemotherapy

  

  No

48

94.1

  Yes

3

5.9

Neck dissection

  

  No

5

9.8

  Yes

46

90.2