Table 1.
Patient and Treatment Characteristics
| Characteristic | Median (Range) or Number of Patients (%) |
|---|---|
| Age at Retreatment (years) | 56 (37-80) |
| Gender | |
| Male | 9 (69%) |
| Female | 4 (31%) |
| Pathology | |
| Pancreatic adenocarcinoma | 3 (23%) |
| Colon carcinoma | 3 (23%) |
| Cholangiocarcinoma | 2 (15%) |
| Others* | 5 (38%) |
| Prior Radiotherapy Dose | |
| 30 Gy (10-12 fractions) | 2 (15%) |
| 35 Gy (14 fractions) | 2 (15%) |
| 45 Gy (25 fractions) | 4 (31%) |
| 50.4 Gy (28 fractions) | 5 (38%) |
| Retreatment Interval (months) | 26 (5-83) |
| Retreatment Dose** | |
| 24 Gy | 1 (8%) |
| 30 Gy | 6 (46%) |
| 34.5 Gy | 1 (8%) |
| 39 Gy | 4 (31%) |
| 48 Gy | 1 (8%) |
| Concurrent Chemotherapy | |
| Yes | 8 (62%) |
| No | 5 (38%) |
| Indication for Retreatment | |
| Palliation of Pain | 5 (38%) |
| Palliation of Bleeding | 4 (31%) |
| Definitive (Not candidate for other treatments) | 3 (23%) |
| Consolidation after Chemotherapy | 1 (8%) |
* Ampullary, gastric, duodenal, small bowel, and pancreatic neuroendocrine
** Retreatment was given in 1.5 Gy twice daily fractions