Changes in Therapeutic Strategy after 18F-FES PET
| Intended therapy | 18F-FES PET finding | Final therapy | Patients (n) |
| Chemotherapy | Strong ER positivity | Antihormonal therapy | 4 |
| Wait-and-see policy | 18F-FES–positive relapse | Antihormonal therapy | 3 |
| Antihormonal therapy | New bone metastases | +Radiotherapy | 4 |
| New bone metastases | +Bisphosphonates | 1 | |
| 18F-FES–negative metastases | Chemotherapy | 2 | |
| Radiotherapy | Negative 18F-FES PET | Wait-and-see policy | 2 |
Changes in therapeutic strategy after 18F-FES PET findings are combined with patient history, prior therapies, clinical presentation, and all findings on conventional imaging techniques.