| MRI | Magnetic Resonance Imaging |
| RT | Radiotherapy |
| IQR | Interquartile Range |
| LRCR | Lazio Region Cancer Registry |
| HIS | Healthcare Information System |
| HDR | Hospital Discharge Records |
| OSCIS | Outpatient Specialist Care Information System |
| 95% CI | Ninety-five percent confidence intervals |
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