Name six causes of a wide or distorted duodenal C-loop.

1. Pancreatic disorders (e.g., pancreatitis, pancreatic cancer
2. Abscess (pancreatic or lesser sac)
3. Enteric duplication cyst
4. Lymphadenopathy
5. Spread of neoplasia from an adjacent structure (e.g., the stomach, colon, or kidney)
6. Lymphoma