[Radiofrequency ablation of liver tumours].
BACKGROUND
A variety of local treatment modalities exists for the palliative therapy of inoperable primary or secondary liver tumours. In this connection the promising use especially of thermal ablation methods has been reported recently. Numerous procedures and technical terms have been mentioned in this context giving us the opportunity of a review on this subject.


METHODS
From the literature of the last five years (Medline/PubMed) including the lists of references physical principles and application techniques, indications and contraindications, possibilities of evaluation and results of high frequency thermotherapy (HFTT) respectively radiofrequency ablation (RFA) were investigated and compared to our own first experiences. Survival and recurrence rates were estimated from the study results.


RESULTS
Most authors describe the HF-thermoablative treatment as a technically uncomplicated and relatively low-risk procedure. After a mean follow-up of about 10 months the mean survival rate was about 90 % and tumor recurrence was seen in approximately 30 % of the patients. The main problems occurred in view of the complete registration of all tumors with imaging techniques before RFA and the complete ablation, especially of larger tumours.


CONCLUSIONS
In most of the clinical studies RFA promises an advantage of survival and improvement of quality of life compared to the known courses of untreated liver tumours. Therefore this method should be practiced on a larger scale in suitable patients. At the same time its efficacy must be proven by comparative studies.
Kormann
J
J
Klinik und Poliklinik für Viszeral, Thorax- und Gefässchirurgie, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Germany.
Ockert
D
D
Bunk
A
A
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D006528:Carcinoma, Hepatocellular / Q000401:mortality / Q000628:therapy*; D017115:Catheter Ablation; D015179:Colorectal Neoplasms; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006979:Hyperthermia, Induced; D007890:Leiomyosarcoma / Q000401:mortality / Q000556:secondary / Q000628:therapy*; D008113:Liver Neoplasms / Q000401:mortality / Q000556:secondary / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D010166:Palliative Care; D013997:Time Factors
Hochfrequenz-Thermoablation bei Lebertumoren.