Esophageal cancer is a disease in which malignant (cancer) cells form in the tissues of the esophagus. The esophagus is the hollow, muscular tube that moves food and liquid from the throat to the stomach. The wall of the esophagus is made up of several layers of tissue, including mucous membrane, muscle, and connective tissue. Esophageal cancer starts on the inside lining of the esophagus and spreads outward through the other layers as it grows.
The two most common forms of esophageal cancer are named for the type of cells that become malignant (cancerous):
- Squamous cell carcinoma: Cancer that forms in squamous cells, the thin, flaT-cells lining the esophagus. This cancer is most often found in the upper and middle part of the esophagus, but can occur anywhere along the esophagus. This is also called epidermoid carcinoma.
- Adenocarcinoma: Cancer that begins in glandular (secretory) cells. Glandular cells in the lining of the esophagus produce and release fluids such as mucus. Adenocarcinomas usually form in the lower part of the esophagus, near the stomach.
Signs & Symptoms
Signs and symptoms of esophageal cancer are weight loss and painful or difficult swallowing. These and other signs and symptoms may be caused by esophageal cancer or by other conditions. Check with your doctor if you have any of the following:
- Painful or difficult swallowing
- Weight loss
- Pain behind the breastbone
- Hoarseness and cough
- Indigestion and heartburn
There are different types of treatment for patients with esophageal cancer. Some treatments are standard (the currently used treatment), and some are being tested in clinical trials. Many people with esophageal cancer find it hard to eat because they have trouble swallowing. The esophagus may be narrowed by the tumor or as a side effect of treatment. Some patients may receive nutrients directly into a vein. Others may need a feeding tube (a flexible plastic tube that is passed through the nose or mouth into the stomach) until they are able to eat on their own.
Your OHC doctor will help you determine the best care plan for you.
Six types of standard treatment are used.
- Surgery is the most common treatment for cancer of the esophagus. Part of the esophagus may be removed in an operation called an esophagectomy. The doctor will connect the remaining healthy part of the esophagus to the stomach so the patient can still swallow. A plastic tube or part of the intestine may be used to make the connection. Lymph nodes near the esophagus may also be removed and viewed under a microscope to see if they contain cancer. If the esophagus is partly blocked by the tumor, an expandable metal stent (tube) may be placed inside the esophagus to help keep it open.
Small, early-stage cancer and high-grade dysplasia of the esophagus may be removed by endoscopic resection. An endoscope (a thin, tube-like instrument with a light and a lens for viewing) is inserted through a small incision (cut) in the skin or through an opening in the body, such as the mouth. A tool attached to the endoscope is used to remove tissue.
- Radiation therapy is a cancer treatment that uses high-energy x-rays or other types of radiation to kill cancer cells or keep them from growing. The way the radiation therapy is given depends on the type and stage of the cancer being treated. External and internal radiation therapy are used to treat esophageal cancer. A plastic tube may be inserted into the esophagus to keep it open during radiation therapy. This is called intraluminal intubation and dilation.
- Chemotherapy is a cancer treatment that uses drugs to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing.
- Chemoradiation therapy combines chemotherapy and radiation therapy to increase the effects of both.
- Laser therapy is a cancer treatment that uses a laser beam (a narrow beam of intense light) to kill cancer cells.
- Electrocoagulation is the use of an electric current to kill cancer cells.
Targeted therapy is a type of treatment being tested in clinical trials that uses drugs or other substances to identify and attack specific cancer cells. Targeted therapies usually cause less harm to normal cells than chemotherapy or radiation therapy do. Monoclonal antibody therapy is a type of targeted therapy used in the treatment of esophageal cancer.