The sigmoid colon is the last section of the bowel — the part that attaches to the rectum. It pushes feces along the bowel tract. It’s about a foot and a half long (around 40 centimeters) and is ...

The colon is part of the digestive system. It helps the body absorb water and nutrients from food before excreting the waste. It is made up of muscle and located just below the stomach. People ...

The sigmoid vein, also called the vena sigmoideus, refers to one group of sigmoid veins. These veins are tributaries of the inferior mesenteric vein, which is a tributary of the hepatic portal vein.