Find out about number and TNM staging and the grades and types of Oesophageal cancer.
Stages of cancer
The stage of a cancer tells you how big it is and how far it’s spread. It helps your doctor decide which treatment you need.
The tests and scans you have to diagnose your cancer give some information about the stage. Sometimes it’s not possible to be certain about the stage of a cancer until after surgery.
Doctors can use a number system or the TNM system to stage your cancer.
Types of Oesophageal cancer
The type of Oesophageal cancer you have tells you the type of cell that the cancer started in. Knowing this helps your doctor decide which treatment you need.
Adenocarcinomas are cancers that develop in gland cells. These cells make mucus in the lining of the oesophagus. They mainly start in the lower part of the oesophagus and are the most common type of oesophageal cancer.
Squamous cell cancer
These cancers develop from cells that make up the inner lining of your oesophagus. They tend to develop in the upper and middle part of the oesophagus.
Squamous cells are resistant to hot liquids and sharp foods and can heal quickly if damaged. As cells are damaged new cells are made to replace them.
Undifferentiated means the specialist cannot tell what type of cell your cancer started from. This is usually because the cells are not mature enough to be specialised.
Specialisation of cells is called differentiation. So these primitive cancer cells are known as undifferentiated cancer cells.
Other rare cancers can develop in the oesophagus they include
The grade of a cancer tells you how much the cancer cells look like normal cells.
The grade gives your doctor an idea of how the cancer might behave and what treatment you need.
The grades of cancer cells are from 1 to 3:
- grade 1 (low grade) look most like normal cells
- grade 2 look a bit like normal cells
- grade 3 (high grade) look very abnormal and not like normal cells