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Table 2 Pathologic characteristics of anal tumors from 27 patients diagnosed with anal cancer

From: Prevalence of human papillomavirus infection in squamous cell carcinoma of the anal canal in a Northeast City in Brazil: viral genotyping and clinical aspects

Predominant morphology

 Ulceration

04

14.81

 Vegetating

02

7.41

 Ulceration and vegetating

06

22.22

 Stenosing

01

3.7

 Non evaluated

14

51.85

Size of the lesion (cm)

  ≤ 0,5

01

3.7

 0.6–2.0

08

29.63

 2.1–5.0

15

55.56

  ≥ 5.1

03

11.11

UJCC/TNM Staging

 I

02

7.41

 II

02

7.41

 III

09

33.33

 IV

0

0

 Non evaluated

14

51.85

Tumor Grade

 Well Differentiated

06

22.22

 Moderately Differentiated

19

70.38

 Poorly Differentiated

01

3.7

 Undifferentiated

01

3.7

Invasion

 Present

09

33.33

 Absent

12

44.45

 Not evaluated

06

22.22

Infiltration

 Anal canal wall

01

3.7

 Perianal region

01

3.7

 Perirectal fat

01

3.7

 Vagina and uterine cervix

01

3.7

 Stroma

01

3.7

 Muscle layer

01

3.7

 Perineural

01

3.7

 Vulvar

01

3.7

 Not evaluated

01

3.7

 No infiltration

18

66.7

Lymph node involvement

 Yes

07

25.93

 No

15

55.55

 Not evaluated

05

18.52

Metastasis

 Yes

03

11.11

 No

19

70.37

 Not evaluated

05

18.52

Inflammatory process

 Yes

05

18.52

 No

12

44.44

 Not evaluated

10

37.04

Necrosis Presence

 Yes

02

7.41

 No

12

44.44

 Not evaluated

13

48.15