| Acute pain syndromes directly related to cancer: |
| Rupture of hepatocellular carcinoma |
| Pathologic fractures from bone metastases (vertebral or long bones) |
| Acute intestinal/biliary/ureteric obstruction or perforation |
| Acute pain syndromes associated with infections: |
| Herpes zoster and postherpetic neuralgia |
| Acute pain syndromes associated with thrombotic events: |
| Deep vein thrombosis (upper and lower extremities) |
| Superior vena cava obstruction |
