Esophageal Cancer Staging
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Staging Esophageal Cancer
The esophagus is a long muscular tube composed of several layers. Staging is a process that helps determine the extent the cancer has penetrated the layers of the esophagus, and whether or not the cancer has spread (metastasized) to other sites in the body. In advanced stages, esophageal cancer may likely spread to the liver, lungs and bones.
Imaging techniques are often used to diagnose esophageal cancers. These methods, such as CT scans, Positron Emission Tomography (PET) scans, and Endoscopic ultrasounds (EUS), are also used to stage esophageal cancer. Staging is a standardized process for evaluating the development and spread of cancer. Doctors use this information to help determine available treatment options for each individual case.
Early stages of esophageal cancer are often characterized by small tumors that have not penetrated the layers of the esophagus. In advanced stages, the cancer may have progressed through the layers and spread beyond its point of origin.
Understanding the TNM System
The American Joint Committee on Cancer's (AJCC) TNM system is often used to stage esophageal cancers. This system uses a stage grouping of three key components; T, N and M:
- Tumor - The tumors are rated on a scale 0-4 where T0 indicates no evidence of the primary tumor expanding into local tissue, and the increasing numbers (T1-T4) describe the extent and spread of tumor into and through the layers of the esophagus. Carcinoma in situ, Tis, describes an early cancer that has not gone beyond to the inner muscle layer (the mucosa).
- Node - This indicates whether the cancer has spread to nearby lymph nodes (N1) or if there is no evidence of lymph node involved (N0)
- Metastasized - Cancer that has spread (metastasized) is indicated by M1. Otherwise, M0 is used if there are no signs of metastases.
Each category (T, N and M) is assessed and rated. An X is used to denote insufficient information (the condition of the particular factor cannot be adequately assessed).
Stage Grouping for Esophageal Cancer
The TNM system assesses the size of the tumor and how far the cancer has spread from the point of origin:
- Stage 0 Esophageal Cancer: The cancer has not penetrated the inner layers of esophagus and remains localized to the epithelium layer. There is also no spread beyond the site of origin. (Example: Tis, N0, M0)
- Stage I Esophageal Cancer: The cancer has grown into the lamina properia (the layer beneath the epithelium) and may have penetrated the next layer. The cancer remains localized to the esophagus and has not spread to nearby tissues or lymph nodes. (Example: T1, N0, M0)
- Stage II Esophageal Cancer: At this stage, the cancer may or may not have grown through the muscle layer or to nearby lymph nodes. The cancer has not spread (metastasized) to distant sites.(Example: T1, N1, M0)
- Stage III Esophageal Cancer: The cancer has penetrated all the layers of the esophagus and may have spread to nearby organs or tissues. It may or may not have spread to the lymph nodes. Distant sites, like the lung or liver, remain unaffected. (Example: T1, N1, M0)
- Stage IV Esophageal Cancer: The cancer has spread to distant lymph nodes and may have spread to distant sites. (Example: Any T, Any N, M1)
Understanding Esophageal Cancer Staging
Knowing the extent and spread of the cancer are important factors when selecting and coordinating a treatment plan. At Cancer Treatment Centers of America (CTCA), your care team is here every step of the way to answer your questions and support you during this process.
There may be a lot of new information to consider. Your CTCA care team is dedicated to ensuring that you clearly understand the process and the variety of treatment options available. With knowledge, expertise and compassion, our doctors clearly communicate the information you need to know.
Treatment Options for Esophageal Cancer at CTCA
At CTCA, we understand that the advanced stages of esophageal cancer may require a combination of conventional treatments, like surgery and chemotherapy. Our cancer experts provide a range of innovative treatments for patients at any stage. And, while you receive your conventional treatments, your care team will also provide supportive cancer therapies to help reduce side effects and keep you strong.
When you're ready to learn more, call 1-800-615-3055 or Chat Now to talk with one of our Oncology Information Specialists. Our representatives are available 24 hours a day, every day of the week. We're ready to help, at any stage.
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