Large cell carcinoma is a form of non-small cell lung cancer. Non-small cell lung cancers account for 80% of lung cancers, and of these, roughly 10% are large cell carcinomas of the lung.
Large Cell Carcinoma OverviewLarge cell carcinomas are also called large cell lung cancers. They are named for the appearance of large round cells when examined under the microscope, although the tumors themselves tend to be large as well when diagnosed. Large cell carcinomas often occur in the outer regions of the lungs, and tend to grow rapidly and spread more quickly than some other forms of non-small cell lung cancer.
SymptomsBecause large cell carcinomas often begin in the outer parts of the lungs, well-known symptoms of lung cancer, such as a chronic cough and coughing up blood, may be less common until later in the disease. Early symptoms of large cell carcinomas that may be overlooked may include fatigue, mild shortness of breath, or achiness in your back, shoulder, or chest.
Since large cell carcinomas are often found in the outer regions of the lungs, they can cause fluid to develop in the space between the tissues that line the lung (pleural effusions), and invade the chest wall. This can cause pain in your chest or side that worsens with a deep breath.
Large cell carcinomas can also secrete hormone-like substances that cause symptoms referred to as paraneoplastic syndrome. In men, these substances may cause enlargement of the breasts, something known as gynecomastia.
DiagnosisLarge cell carcinoma of the lungs is often first suspected when abnormalities are seen in an X-ray. Further evaluation may include:
Depending upon the results, your doctor will usually want to obtain a sample of tissue to confirm the diagnosis, and will order further tests to check to see if your cancer has spread.
StagesLarge cell carcinoma is broken down into 4 stages:
- Stage 1 – The cancer is localized within the lung and has not spread to any lymph nodes.
- Stage 2 – The cancer has spread to lymph nodes or the lining of the lungs, or is in a certain area of the main bronchus.
- Stage 3 – The cancer has spread to tissue near the lungs.
- Stage 4 – The cancer has spread (metastasized) to another part of the body.
CausesLarge cell carcinomas of the lungs are more strongly associated with smoking than some other types of non-small cell lung cancers, but other causes can contribute as well:
TreatmentsDepending upon the stage, treatment for large cell carcinomas of the lung may include surgery, chemotherapy, radiation therapy, or a combination of these. Many clinical trials are in progress looking for new ways to treat lung cancer, and to help decide which treatments are most effective.
PrognosisThe 5-year survival rate for lung cancer overall is sadly only about 15%. For those diagnosed in the early stages of the disease, the prognosis is much better. One variant of large cell carcinoma, large cell neuroendocrine carcinoma, has a poorer prognosis than large cell carcinoma.
Coping with Lung CancerA diagnosis of lung cancer is frightening and you may feel very alone. Allow your loved ones to support you. Many people have no idea how to react towards someone who is diagnosed with cancer. Letting people know specific things they can do to help may ease their anxiety, as well as fill your need for extra support at this time.
Ask questions. Learn as much as you can. Consider joining a lung cancer support group either through your cancer center or online. And be true to yourself. No matter what others have experienced or recommend, only you know what is best for you.
National Cancer Institute. Non-Small Cell Lung Cancer Treatment (PDQ). Updated 08/. http://www.cancer.gov/cancertopics/pdq/treatment/non-small-cell-lung/Heal15/12thProfessional
Sheth, S. Current and emerging therapies for patients with advanced non-small cell lung cancer. American Journal of Health-System Pharmacy. 2010. 67(1 Suppl 1):S9-14.