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Esophageal Cancer, Videos

Anatomy of esophagus


Video Transcript:

In the chest cavity, this trachea lies in front which helps us breathe.

As you can see, behind the trachea lies the esophagus.

The heart also lies in the chest cavity in front of the esophagus. And on both sides, lie the lungs.

And as you can see in the figure, esophagus crosses the diaphragm to enter into the abdomen, where it joins the stomach.

Esophagus starts at a distance of 15 cm from the upper incisors, at the level of cricopharyngeus muscle.

And the lowest most end of the esophagus is at a distance of 40 cm from the upper incisors, at the level of the gastroesophageal junction.

So the total length of the esophagus is 25 cm. The upper 3 cm of the esophagus is called the cervical esophagus.

And below that esophagus may be divided into 3 parts – upper, middle and lower esophagus, as you can see in the figure.

Carcinoma arising from the upper and middle esophagus is mostly squamous cell carcinoma. Adenocarcinoma is seen very rarely in this region.

Whereas, in the lower 1/3d of the esophagus, it is mostly adenocarcinoma, although squamous cell carcinoma may also be seen.

So after knowing the anatomy of the esophagus, now let’s discuss the staging for esophageal cancer. This is all about Anatomy of esophagus.

 

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