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Table 1 Anatomic site distribution of the AK lesions in patients with fresh-frozen cytological (N = 242) and FFPE histological samples (N = 100)

From: Prevalence of 13 polyomaviruses in actinic keratosis and matched healthy skin samples of immunocompetent individuals

AK site

AK patients cytological samples

AK patients histological samples

N = 242

N = 100

Male

Female

p valuea

Male

Female

p valuea

N = 141

N = 101

N = 55

N = 45

n (%)

n (%)

n (%)

n (%)

Head

Scalp

71 (50.4)

3 (3.0)

< 0.0001

15 (27.3)

1 (2.2)

0.0007

Forehead

20 (14.2)

21 (20.8)

0.16

7 (12.7)

6 (13.3)

0.93

Cheeks

14 (10.0)

34 (33.7)

0.0001

5 (9.1)

13 (29.0)

0.01

Temples

15 (10.7)

7 (6.9)

0.32

7 (12.7)

1 (2.2)

0.06

Nose

6 (4.2)

16 (15.8)

0.002

6 (10.9)

6 (13.3)

0.7

Auricles

3 (2.1)

2 (2.0)

0.96

3 (5.5)

0 (0.0)

0.11

Eyes

0 (0.0)

0 (0.0)

0 (0.0)

2 (3.6)

2 (4.4)

0.84

Lips

3 (2.1)

0 (0.0)

0.14

0 (0.0)

4 (8.9)

0.02

Trunk

Chest

2 (1.4)

9 (8.9)

0.006

3 (5.5)

3 (6.7)

0.80

Torso

4 (2.8)

7 (6.9)

0.49

4 (7.3)

3 (6.7)

0.91

Extremities

Arms

3 (2.1)

2 (2.0)

0.96

2 (3.6)

3 (6.7)

0.48

Hands

0 (0.0)

0 (0.0)

0 (0.0)

0 (0.0)

1 (2.2)

0.27

Legs

0 (0.0)

0 (0.0)

0 (0.0)

1 (1.8)

2 (4.4)

0.45

  1. Significant differences are highlighted in bold
  2. AK, actinic keratosis; FFPE, formalin-fixed paraffin-embedded
  3. ap value for the comparison between AK lesion site in male and female patients