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Classification of radiation cystitis severity
| A. Severity of hemorrhagic cystitis | |
| Units transfused within 30 days of HBO | |
| Mild | 0 U |
| Moderate | 1–6 U |
| Severe | >6 U |
| B. Modified RTOG grading system for morbidity | |
| Hematuria | |
| Grade I | Single minor bleeding |
| Grade II | Repeated minor bleeding |
| Grade III | Inpatient medical treatment |
| Grade IV | Inpatient surgical treatment |
| Grade V | Death |
