Radiofrequency Ablation of Lung Cancer Found Effective
I came across a recent article that discusses a non-surgical means for ablating malignant lesions of the lung for patients who cannot tolerate surgery or other therapeutic approaches (see: Non-Surgical Approach Can Treat Lung Cancers). It's called radiofrequency ablation (RFA), Below is an excerpt from the article with boldface emphasis mine:
A minimally invasive procedure normally used to treat liver cancer also holds promise for lung cancer patients, according to a new study. In the study..., 88 percent of lung cancer patients responded well to treatment with percutaneous image-guided radiofrequency ablation (RFA). RFA is performed in less than an hour and is a non-surgical procedure that targets large tumors with no harm to surrounding healthy tissue. After one year, 70 percent of patients survived at least one year with few side effects; none that impaired lung function, the researchers report....Lung cancer is the leading cause of cancer death in both men and women. Surgery is the standard treatment for early-stage, non-small-cell lung cancer (NSCLC), which constitutes about 80 percent of most malignant lung tumors. Unfortunately not all patients are eligible due to other health reasons. The alternatives, radiotherapy or chemotherapy, do not have good survival rates. The study...involved 106 patients with malignant lung tumors that were smaller than 5 cm in diameter. Thirty-three patients had NSCLC; 53, metastatic lung cancer from the colon; and 20, metastatic lung cancer from other sites in the body. All the patients had been turned down for surgery, radiotherapy or chemotherapy. The major post-RFA complications were pneumothorax (27 instances) and pleural effusion (4 instances) which needed drainage.
Here is a more detailed description of RFA from RadiologyInfo:
In radiofrequency ablation, imaging techniques such as ultrasound and computed tomography (CT) are used to help guide a needle electrode into a cancerous tumor. High-frequency electrical currents are then passed through the electrode, creating heat that destroys the abnormal cells.
Basically, this technique is analogous to "cooking" the primary or metastatic lung lesions in a microwave oven. This approach would seem to bypass both the thoracic surgeons and pathologists unless fine needle aspiration (FNA) is used to diagnose the NSCLC lung lesions. In the case of those patients with metastatic disease, biopsies may have been obtained previously to diagnose the primary lesions. This seems to be an excellent approach for patients who are not candidates for other therapies. It also effectively demonstrates the expanding scope of practice of interventional radiology.





