Dismiss Modal

Definition

Anatomía del ano

Choose a preferred language

El ano es la última parte del tubo digestivo. Está en el extremo del recto. Es por donde salen las heces del cuerpo. Consiste en un anillo muscular (llamado esfínter) que se abre durante la evacuación para permitir el paso de las heces y también células delgadas que recubren el interior del ano. La mayoría de los tipos de cáncer anal se originan en estas células delgadas de la mucosa. También se denominan células escamosas. La parte inferior del ano, donde se une con la piel, se denomina margen anal.

Corte transversal del ano.

© 2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare provider's instructions.

Get Connected to a Care Manager

Get Connected
Related Articles
Read article
Digestive Health
Stomach Cancer: Stages

Learn what the different stages of stomach cancer mean.

Read article
Digestive Health
CT Scan of the Liver and Biliary Tract

A CT scan is a type of imaging test. It uses X-rays and computer technology to make images of the body. A CT scan can make detailed pictures of any part of the body, including the bones, muscles, fat, organs, and blood vessels. They are more detailed than regular X-rays.

Read article
Digestive Health
Esophageal Cancer: Photodynamic Therapy (PDT)

In photodynamic therapy (PDT), you receive a light-activated medicine that tends to collect in cancer cells. Later the cells are exposed to a special light. This changes the medicine into a new form that kills the cancer cells.

Read article
Ear, Nose, and Throat
Esophageal Cancer: Introduction

Esophageal cancer is cancer that starts in your esophagus. This is the tube that carries food and liquid from your throat to your stomach.