A non-cancerous (benign) tumour of the lung is a growth that does not spread (metastasize) to other parts of the body. Non-cancerous tumours are usually not life-threatening.
Benign lung tumors don't spread to other areas of your body. Generally, benign tumors grow slowly, but they can sometimes stop growing or may even shrink. These tumors usually don't require removal or treatment and aren't life-threatening.
How are benign lung tumors treated? In most cases, benign lung tumors don't require treatment. Your healthcare provider will want to take a series of X-rays or CT (computed tomography) scans over a period of months to years to watch for any changes in tumor size or features.
About 95% of lung nodules are benign. Many things can cause benign lung nodules, including infections and scarring. If you have a pulmonary nodule, your healthcare provider may want to perform additional tests to determine the cause and rule out lung cancer.
Benign pulmonary nodules are just that—benign. There is very little growth or change, if there's any at all. Cancerous pulmonary nodules, however, are known to grow relatively quickly—usually doubling in size every four months but sometimes as fast as every 25 days.
Benign lung nodules and tumors don't often cause symptoms, and they're often found accidentally on an imaging test. If they do cause symptoms, they can cause: Shortness of breath. Wheezing.
When a benign tumor must be removed surgically, there are now minimally invasive procedures that allow for a much faster recovery. The procedure known as video-assisted thoracoscopic surgery involves making a few incision in the chest wall in order to gain access to the lungs.
Benign tumors are not usually problematic. However, they can become large and compress structures nearby, causing pain or other medical complications. For example, a large benign lung tumor could compress the trachea (windpipe) and cause difficulty in breathing. This would warrant urgent surgical removal.
Benign lung nodules and tumors usually cause no symptoms. This is why they are almost always found accidentally on a chest X-ray or CT scan.
For brain or lung metastasis, the larger the tumor, the higher the risk of brain or lung metastasis.
Nodules between 6 mm and 10 mm need to be carefully assessed. Nodules greater than 10 mm in diameter should be biopsied or removed due to the 80 percent probability that they are malignant. Nodules greater than 3 cm are referred to as lung masses.
Adenocarcinoma is usually found in the outer parts of the lung and is more likely to be found before it has spread. People with a type of adenocarcinoma called adenocarcinoma in situ (previously called bronchioloalveolar carcinoma) tend to have a better outlook than those with other types of lung cancer.
The most common causes of lung nodules are inflamed tissue due to an infection or inflammation (called granulomas) or benign lung tumors (such as hamartomas). Less common, malignant lung nodules are typically caused by lung cancer or other cancers that have spread to the lungs (metastatic cancer).
Even though most benign tumors are harmless and can be left alone, it's important they be monitored. And any tumor that is painful or growing requires a visit to the doctor.
That's because these growths can still cause symptoms, such as putting pressure on the brain and other important organs, causing a person pain or impeding function. That can necessitate treatment – often surgery to remove the growth.
However, only 16 percent of lung cancer cases are diagnosed at an early stage. For distant tumors (spread to other organs) the five-year survival rate is only 5 percent. More than half of people with lung cancer die within one year of being diagnosed.
Lung biopsy procedures are not usually painful and have few risks that doctors associate with them. A doctor will only recommend a lung biopsy procedure to support their diagnosis. For example, if a person has smaller lung nodules, a biopsy may be too risky and difficult to justify.
In other cases, the cancer may have reached the lymph nodes in the same area of the chest as the original tumor—typically, the lymph nodes near the bronchus or within the lung. In addition, the cancer meets one of the following criteria: The lung cancer tumor is larger than 7 cm.
In general, a benign tumor grows slowly and is not harmful. However, this is not always the case. A benign tumor may grow big enough or be found near blood vessels, the brain, nerves, or organs. As a result, it can cause problems locally without spreading to another part of the body.
Overall 5-year relative survival was 96.1% (95% CI 95.1–97.1%), being significantly lower in tumours of borderline (90.2%, 87.2–92.7%) than benign behaviour (97.4%, 96.3–98.3%).
Many benign neoplasms don't cause any symptoms at all. But if they grow large enough to press on bodily structures, they may cause: Bleeding (for example, with a fibroid in the uterus). Headaches, seizures or trouble seeing (for example, with a brain tumor).
Because SCLC spreads widely and rapidly through the body, removing it all by surgery is usually impossible. Your doctor is more likely to use treatments like chemotherapy, radiation, or immunotherapy.
Your Recovery
It is common to feel tired for 6 to 8 weeks after surgery. Your chest may hurt and be swollen for up to 6 weeks. It may ache or feel stiff for up to 3 months. For up to 3 months, you may also feel tightness, itching, numbness, or tingling around the cut (incision) the doctor made.
For patients who have small, early-stage lung cancer, the cure rate can be as high as 80% to 90%. Cure rates drop dramatically as the tumor becomes more advanced and involves lymph nodes or other parts of the body.