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Table 3 Results of immunohistochemical analysis

From: Bladder perforation during transurethral resection of bladder tumour is not a result of a deficient structure of the bladder wall

  Group 1 (perforation) Group 2 (no perforation) P value (group 1 vs. group 2) *
Type IV collagen Mean IRS score 3.24 2.20 0.49
Percentage of positive cells 0 0% 1.8%
1 26.9% 54.5%
2 61.6% 38.2%
3 11.5% 5.5%
4 0% 0%
Staining intensity 0 0% 1.8%
1 53.8% 61.8%
2 38.5% 29.1%
3 7.7% 7.3%
Cytokeratin 20 Mean IRS score 8.16 7.18 0.91
Percentage of positive cells 0 0% 10.9%
1 19.2% 20.0%
2 3.8% 5.4%
3 61.6% 27.3%
4 15.4% 36.4%
Staining intensity 0 0% 10.9%
1 15.4% 9.1%
2 7.7% 20.0%
3 76.9% 60.0%
Epithelial membrane antigen Mean IRS score 2.84 2.11 0.41
Percentage of positive cells 0 0% 25.5%
1 26.9% 32.7%
2 50.0% 34.5%
3 23.1% 7.3%
4 0% 0%
Staining intensity 0 0% 25.5%
1 61.5% 40.0%
2 38.5% 21.8%
3 0% 12.7%
E-cadherin Mean IRS score 10.64 10.45 0.79
Percentage of positive cells 0 0% 0%
1 0% 0%
2 3.8% 0%
3 19.2% 45.5%
4 77.0% 54.5%
Staining intensity 0 0% 0%
1 0% 0%
2 15.4% 5.5%
3 84.6% 94.5%
B-catenin Mean IRS score 5.92 3.85 0.82
Percentage of positive cells 0 7.7% 5.4%
1 23.1% 16.4%
2 15.4% 56.4%
3 46.1% 14.5%
4 7.7% 7.3%
Staining intensity 0 7.7% 5.5%
1 23.1% 32.7%
2 11.5% 50.9%
3 57.7% 10.9%
  1. Percentage of positive cells: score of 0, no cells with positive reaction; 1, ≤ 10% cells with positive reaction; 2, 11 to 50% cells with positive reaction; 3, 51 to 80% cells with positive reaction; 4, > 80% cells with positive reaction
  2. Staining intensity: 0, no colour reaction; 1, poor colour reaction; 2, moderate colour reaction; 3, intensive colour reaction
  3. *Pearson’s chi-square test