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9

NCCN Guidelines for Patients

®

:

Colon Cancer, Version 1.2017

1

Colon cancer basics

The colon

Figure 1

The digestive tract

The digestive tract consists

of 4 main parts. The

esophagus moves food

from your throat to your

stomach. In the stomach,

food is turned into a liquid.

Nutrients from the liquid are

absorbed into your body

within the small intestine.

The large intestine absorbs

liquid from and pushes

unused food out of the

body.

esophagus

stomach small intestine large intestine

Illustration Copyright © 2017 Nucleus Medical Media, All rights reserved.

www.nucleusinc.com

Figure 2

The colon

The colon is part of the

large intestine. It is almost

5 feet long. It has four

sections—the ascending,

transverse, descending,

and sigmoid colon. Its wall

has four main layers—the

mucosa, submucosa,

muscularis propria, and

serosa or adventitia.

Sigmoid colon

Descending

colon

Ascending

colon

mucosa

submucosa

muscularis

propria

serosa

transverse colon

a

si

i c l

d

Illustration Copyright © 2017 Nucleus Medical Media, All rights reserved.

www.nucleusinc.com