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Table 4 Results of ultrastructural analysis by electron microscopy

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) *
Intensity of fibrosis in bladder submucosa No fibrosis 9.1% 0% 0.32
Mild fibrosis 9.1% 15.4%
Moderate fibrosis 18.2% 46.1%
Severe fibrosis 63.6% 38.5%
Presence of degenerative changes in the urothelium No changes 9.1% 7.7% 0.99
Mild changes 0% 0%
Moderate changes 54.5% 53.8%
Severe changes 36.4% 38.5%
  1. *Pearson’s chi-square test