Cáncer de esófago

Esophageal cancer stages describe how far the cancer has grown and spread. Staging helps the healthcare team plan treatment and estimate prognosis. The prognosis is how likely it is that the cancer will be cured.

Esophageal cancer is usually staged from 0 to 4. The exact stage depends on several features, including how deeply the cancer has grown into the esophagus, whether nearby lymph nodes contain cancer, whether the cancer has grown into nearby structures, and whether it has spread to distant parts of the body. The stage groupings differ somewhat for adenocarcinoma and squamous cell carcinoma.

Stage 0

Stage 0 esophageal cancer is limited to the inner lining of the esophagus. It also may be called high-grade dysplasia.

Stage 1

Stage 1 esophageal cancer has grown into the inner layers of the esophagus and, in some cases, into the muscle layer. It has not spread to distant parts of the body. The exact stage 1 category depends on the cancer type, how deeply it has grown and the grade of the cancer cells.

Stage 2

Stage 2 cancer has generally grown more deeply into the wall of the esophagus. Some stage 2 cancers also involve one or two nearby lymph nodes. The exact definition depends on whether the cancer is adenocarcinoma or squamous cell carcinoma and on other tumor features.

Stage 3

Stage 3 cancer has grown more deeply through the esophagus, involves more nearby lymph nodes, or has grown into some nearby tissues or structures. It has not spread to distant parts of the body.

Stage 4

Stage 4 is the most advanced stage. Stage 4A cancer may have grown into nearby structures or spread to many nearby lymph nodes. Stage 4B cancer has spread to a distant part of the body, such as the liver or lungs.

Symptoms and stage

Symptoms do not reliably show which stage of esophageal cancer a person has. Early cancer may cause no symptoms, while symptoms such as trouble swallowing and weight loss are more likely after a tumor has grown larger. Tests are needed to determine the stage.

Stages in children

Esophageal cancer is extremely rare in children and adolescents. The U.S. National Cancer Institute does not have a separate childhood staging system for esophageal cancer. In children, prognosis depends in part on whether the cancer has spread and whether it can be completely removed with surgery. Treatment decisions should be made by a pediatric cancer team with experience treating rare childhood cancers.