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Table 1 Characteristics of patients and histological findings

From: Prevalence and association of Epstein-Barr virus infection with sinonasal inverted papilloma and sinonasal squamous cell carcinoma in the northeastern Thai population

Characteristics

NP

SIP

SNSCC

Number of cases

80

64

82

Age (years)

  < 50

47 (58.8%)

17 (26.6%)

16 (19.5%)

  ≥ 50

32 (40.0%)

47 (73.4%)

66 (80.5%)

No clinical data

1 (1.2%)

0 (0.0%)

0 (0.0%)

Sex (%)

 Male

50 (62.5%)

45 (70.3%)

55 (67.1%)

 Female

29 (36.3%)

19 (29.7%)

27 (32.9%)

 No clinical data

1 (1.2%)

0 (0.0%)

0 (0.0%)

Inflammation (%)

 Sub-acute

0 (0.0%)

2 (3.1%)

 

 Chronic

15 (18.8%)

2 (3.1%)

 

 No inflammation

64 (80.0%)

52 (81.3%)

 

 No clinical data

1 (1.2%)

8 (12.5%)

 

Dysplastic change (%)

 Focal dysplasia

 

2 (3.1%)

 

 Mild dysplasia

 

2 (3.1%)

 

 Severe dysplasia

 

2 (3.1%)

 

 No dysplasia

 

50 (78.2%)

 

 No clinical data

 

8 (12.5%)

 

Cell differentiation (%)

 Undifferentiated

  

1 (1.2%)

 Poorly differentiated

  

4 (4.9%)

 Moderately differentiated

  

12 (14.6%)

 Well differentiated

  

14 (17.1%)

 No clinical data

  

51 (62.2%)

Invasion (%)

 Invasive

  

13 (15.8%)

 Not invasive

  

65 (79.2%)

 No clinical data

  

4 (4.9%)

Recurrence (%)

 Yes

 

3 (4.7%)

8 (9.7%)

 No

 

53 (82.8%)

70 (85.4%)

 No clinical data

 

8 (12.5%)

4 (4.9%)

Metastasis (%)

 Yes

  

1 (1.2%)

 No

  

77 (93.9%)

 No clinical data

  

4 (4.9%)