NCUK Virtual Patient Handbook

Example 3: Small Bowel Neuroendocrine Cancer

The small bowel (or small intestine) is the longest part of the digestive system. It is only about as wide around as a middle finger (approximately 1 inch or 2.5 centimetres) and is, on average, 600 centimetres in length in an adult (we need at least 200 centimetres to maintain normal function).

Small Bowel image adapted from https://www.myhsn.co.uk/top-tip/what-does-the-small-bowel-do-5-functions

The small bowel is anchored within the abdomen by a double fold of peritoneum (lining of the abdomen) called the mesentery. Lymph nodes and the blood supply to the intestines run through it. If the bowel becomes kinked or blocked - you may experience symptoms of bowel obstruction.

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