Complications

• Injection too superficial;
  • Mucosal necrosis
  • Ulceration
  • Sepsis
  • Secondary Haemmorhage
• Injection too deep;
  • Urethral irritation
  • Perirectal fibrosis
  • Injection too deeply anteriorly into prostate or seminal vesicle or periprostatic parasympathetic nerves may result in sepsis and impotence
• Failure to shrink haemorrhoids
• Recurrance of haemorrhoids

About 8 mm separates the rectal lumen from the peri-prostatic parasympathetic ganglia that play a role in erection. The clinician should be very careful when tempted to inject anteriorly, he should avoid this to prevent the complicaiton of impotence. [PBWM00]