ABSTRACT
Several surgical, medical, irradiative, and image-guided focal ablative therapies
are available for patients with primary non-small-cell lung cancer (NSCLC) or pulmonary
metastases. The most appropriate therapy depends on cell type; the size, location,
and number of tumors; the degree of local tumor spread and regional and distant metastases;
the cardiopulmonary and functional status of the patient; symptoms; and therapeutic
goals and desires of the patients and their caregivers. When potential cure or survival
benefit is the goal, the most appropriate patients for radiofrequency (RF) ablation
are those with stage I NSCLC or a few peripheral metastases limited to the lungs that
are preferably less than 3 cm diameter, and who are not candidates for surgical resection.
Because many of these patients will demonstrate local residual viable tumor or develop
metastases or new primary tumors elsewhere, lifelong imaging surveillance with potential
reintervention is warranted. When relief of tumor-related symptoms is the therapeutic
goal, RF ablation may be applied to larger more advanced tumors with a reasonable
expectation of improvement in a significant proportion of this population.
In addition to judicious case selection, precise device placement with careful attention
to RF ablation technique is essential to achieve optimized outcome with respect to
complete tumor necrosis and avoidance of injury to critical nontargeted structures.
Awareness of potential complications, use of techniques to minimize the probability
of complications, and early recognition with aggressive management of complications
are paramount to maintaining a satisfactory safety profile for RF ablation.
KEYWORDS
Lung cancer - radiofrequency ablation - image-guided therapy - metastases - lung
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Steven C RoseM.D.
Department of Radiology 8756, University of California San Diego Medical Center
200 West Arbor Dr., San Diego, CA 92103-8756
Email: scrose@ucsd.edu