Radiofrequency ablation treatment of liver cancer

By | April 10, 2012

1. radiofrequency ablation treatment of liver cancer in the principle: RF ablation is the use of high frequency electromagnetic wave frequency 30-300 kHz, the medium vibration friction, resulting in 90'C-120C high temperature, a direct result of tumor tissue dissolution, oxidation and coagulation necrosis .
Liver cancer is one of the most common malignant tumor, surgery is the most effective treatment. However, highly malignant tumor was found late, while most patients with severe cirrhosis, the excision rate of only about 20%.Consumers can be percutaneous radiofrequency treatment for harmony, but also in surgery or laparoscopic manner. When the electrode temperature exceeds 95'C, for 6 minutes, to ensure that the scope of damage to and including 1 cm of surrounding normal liver tissue. Less than 3 cm tumor lines 1-2 loci, a second treatment, tumors can be completely destroyed; 3-4 cm of the tumor sites of at least 6 rows of overlapping damage; the tumors larger than 4 cm in many A number of interchange points damage. Of the pancreas, lung, kidney, adrenal gland, bone marrow and organs of the uterus and other substantive benign and malignant tumors also achieved encouraging preliminary results.
2. Radiofrequency ablation characteristics
1) Withdrawal of the needle to prevent needle ablation needle tract cancer metastasis and bleeding.
2) In the course of treatment can be monitored around the 5 points the treatment area temperature feedback at any time during the treatment the temperature of the electrode and tissue interface. Once the treatment area was observed at a point temperature significantly lower than other areas, you can take the appropriate measures to strengthen the treatment to ensure efficacy.
3) to predict the extent of coagulative necrosis, it can kill cancer cells but also to minimize damage to surrounding normal liver tissue.
3. Radiofrequency ablation indication
1) associated with hepatic metastasis of primary liver cancer unsuitable for surgery and other treatment.
2) tumors larger than 5 cm can be taken to dividing treatment or in combination with hepatic artery embolization, slow tumor development.
3) recurrence after resection of primary liver cancer.
4) The combination of primary liver cancer or other diseases, frail elderly, those who can not tolerate surgery.
5) less than 5 cm in diameter, number of tumors less than 3 months of primary liver cancer, in general, radiofrequency ablation lesions can be completely destroyed.
4. Radiofrequency ablation of liver cancer contraindications
1) in combination with abdominal infection.
2) Consolidated obvious ascites.
3) severe cirrhosis, liver damage.
5. Radiofrequency catheter ablation of common adverse reactions after a transient increase in transaminases, mild yellow plague, fever, and occasionally a small amount of ascites, liver treatment can be given to ease soon. Radiofrequency ablation for hepatocellular carcinoma under local anesthesia, some patients have pain, may be given a sedative, is generally not used intravenous anesthetics. Some patients have fever feeling back, and if the surface of the tumor in the liver, some patients will be more obvious sense of cross-prolyl heating, the patient will feel shoulder pain.

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