In comparisons, consider lifestyles and evolutionary history of animals. Pancreas marks duodenum. Jejunum, ileum: attaches to large intestine and colon at a T junction with caecum or appendix.

The small bowel includes the ileum, jejunum and duodenum. The grade refers to how quickly or slowly the cancer cells are dividing and growing. The stage of a neuroendocrine cancer tells you its size ...