Hemorrhagic cystitis is a significant urological condition, consisting of inflammation and/or damage of the urinary bladder mucosa and superficial blood vessels, with subsequent diffuse bleeding. Its main clinical symptoms are: persistent (and frequently severe) hematuria, urinary frequency, suprapubic pain, and even acute urinary retention (due to blood clots). A large number of possible causes of hemorrhagic cystitis have been identified, including radiation therapy (for prostate or cervical cancer), infectious pathogens (viral, as BK virus, adenovirus, herpes virus, or bacterial, as Escherichia Coli, Proteus Mirabilis, or Klebsiella), and chemical or drug exposure (to cyclophosphamide, ifosfamide, busulfan, thiotepa, or aniline dye, among many others).