Résumé
Radiofrequency is a thermal ablative technique that is most often used percuteanously under image guidance. Thermal damage is obtained through frictional heating of a high frequency current. The maximal volume of destruction obtained in one radiofrequency delivery is around 4. cm and consequently, best indication for treatment are tumours below 3. cm. When compared, radiofrequency and surgical removal for tumours below 25. mm in diameter demonstrated a rate of incomplete resection/ablation of 6% and 7.3% respectively. Median survival after the first radiofrequency of a liver metastasis of CRC is reported to be 24 to 52 months with a 5 years overall survival of 18 to 44%. The median overall survival increases from 22 to 48 months depending on the use of radiofrequency ablation as rescue treatment after failure of others, or as a first line treatment. For patients with a single tumour, less than 4. cm, the survival rates at 1, 3, and 5 years are respectively 97%, 84% and 40%, with a median survival of 50 months. Follow-up imaging requires to use contrast-enhanced CT or MRI, looking for local recurrences evidenced by local foci of enhancement at the periphery of the ablation zone.
Titre traduit de la contribution | Ablation of liver metastases by radiofrequency |
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langue originale | Français |
Pages (de - à) | 339-343 |
Nombre de pages | 5 |
journal | Cancer/Radiotherapie |
Volume | 16 |
Numéro de publication | 5-6 |
Les DOIs | |
état | Publié - 1 sept. 2012 |
mots-clés
- Ablation
- Liver
- Metastasis
- Radiofrequency