33 percent of patients with lung cancer are diagnosed with a localized disease which can be treated by surgical resection. And maybe paired with definitive radiotherapy if needed. About 33 percent suffer from tumors affecting the lymph node. Here, the treatment involves chemotherapy, radiation therapy, and surgical resection. The last 33% will suffer from a condition where bloodstreams have carried cancer to other body organs.
Surgery: The patients who are in good health and have been detected with early-stage cancer, their infected lobe of the lung will be eliminated which houses the tumor. But then lung cancer is usually found among smokers who are above the age of 50 and in such cases, the risks of surgery are too high. Open thoracotomy or less invasive video-assisted thoracic surgery is used with small-sized incisions among selected patients.
Lobectomy: When the lungs are in good condition then removal of the entire lobe of the lung is the most suitable approach and the mortality risk is as low as 3 to 4% only and it is higher among senior patients. If the functions of lungs prohibit lobectomy then the tumor must be removed with some small surrounding tissues in the lungs. This kind of procedure is called sublobar resection and it can either be a segmentectomy or wedge resection. In this case the chances or recurrence increase. The sublobar resection has a mortality risk of 1.4% and loss of lung function is minimal. If the entire lung has to be removed, then the procedure is called pneumonectomy and the mortality rate is also increased to 5 to 8%. In most cases, due to the age of the patient, it is not possible.
Radiofrequency ablation or RFA and microwave ablation or MWA: These use image guidance technique for placing a needle into the tumor through the skin of the chest. In RFA the electric currents are passed through an electrode in high frequency to create heat in the small region. In MWA microwaves are produced for the creation of heat in a constricted region. The heat aims to destroy the cells that are cancerous. These are effective for patients who have trouble in getting surgeries done.
Radiation therapy or radiotherapy: It delivers high energy x-rays that are capable of destroying the rapidly dividing cancer cells and it finds many uses in the treatment of lung cancer. They are also helpful in relieving some of the symptoms associated with the tumor. This is the initial treatment that is associated with surgery and can be combined with chemotherapy. Stereotactic body radiation therapy or SBRT is being considered for patients who cannot undergo surgery. Multiple small but focused radiation beams target the lung tumor in a series of 3 to 5 treatments. Most radiation therapy is given to patients with the help of an external beam technique and aims a beam of x-rays directly at the tumor.
In brachytherapy, the radiation is given to the site directly placing radioactive seeds on the primary tumor surgically.
Chemotherapy: This involves the administration of drugs that are toxic to the cancer cells and they are usually given by direct injection into the vein or by placing a catheter in the large vein. This is usually given to sterilize microscopic diseases after surgery. Significant side effects are commonly associated with chemotherapy such as vomiting, nausea and general damage to the immunity of the body to combat infection effectively.
One thing is common for all the procedures above, the patient needs to make serious changes in their lifestyle like quit smoking or being close to even a smoker, eat healthily and reduce exposure to harmful substances.