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Radiofrequency ablation (RFA), also called fulguration, [1] is a medical procedure in which part of the electrical conduction system of the heart, tumor, sensory nerves or a dysfunctional tissue is ablated using the heat generated from medium frequency alternating current (in the range of 350–500 kHz).
In fulguration mode, the electrode is held away from the tissue, so that when the air gap between the electrode and the tissue is ionized, an electric arc discharge develops. In this approach, the burning to the tissue is more superficial, because the current is spread over the tissue area larger than the tip of electrode. [13]
Fulguration, in which a deliberate spark is generated by touching or nearly touching the sharp probe to the lesion or skin. This results in far higher temperatures at the point of contact of the spark to skin, causing very high temperatures and carbonization (eschar) of the tissue immediately at the spark-contact point, and just below it.
Ablation near the electrode in a flashtube.The high-energy electrical arc slowly erodes the glass, leaving a frosted appearance. Ablation (Latin: ablatio – removal) is the removal or destruction of something from an object by vaporization, chipping, erosive processes, or by other means.
Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. [3] [4] Cancer can be difficult to diagnose because its signs and symptoms are often nonspecific, meaning they may be general phenomena that do not point directly to a specific disease process. [5]
Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. [2] [7] These contrast with benign tumors, which do not spread. [7] Possible signs and symptoms include a lump, abnormal bleeding, prolonged cough, unexplained weight loss, and a change in bowel movements. [1]
Warts, moles, skin tags, solar keratoses, molluscum, [6] Morton's neuroma [7] and small skin cancers are candidates for cryosurgical treatment. Several internal disorders are also treated with cryosurgery, including liver cancer, prostate cancer, lung cancer, oral cancers, cervical disorders and, more commonly in the past, hemorrhoids.
A plantar wart is a wart occurring on the bottom of the foot or toes. [5] Its color is typically similar to that of the skin. [2] Small black dots often occur on the surface. [5] ...