The duodenum, or the first part of the small intestine, connects to the stomach. The duodenum is about 10 in. (25 cm) long and curved, almost forming a circle.
| By | Healthwise Staff |
| Primary Medical Reviewer | Kathleen Romito, MD - Family Medicine |
| Specialist Medical Reviewer | Jerome B. Simon, MD, FRCPC, FACP - Gastroenterology |
| Last Revised | May 18, 2010 |
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