Radiofrequency ablathermia of pulmonary nodules : CT follow-up and prognostic study.
LA TUNISIE MEDICALE 2020;
98:730-738. [PMID:
33479946]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
INTRODUCTION
Radiofrequency ablathermia of pulmonary nodules is a local curative treatment whose efficacy assessment is still a current topic.
AIMS
To specify the monitoring protocol, the scannographic aspects of treated lesions, deduce criteria of incomplete ablation, and identify the prognostic factors influencing overall and progression-free survivals.
METHODS
A prognostic descriptive retrospective study conducted in the medical imaging department of Abderrahman Mami Hospital. The nodules were monitored at 24-hour, 2.4,6,9,12,15,18 and 24 months after treatment and then once a year. The study of overall and progression-free survivals was done using Kaplan Meier's method.
RESULTS
Sixteen patients with 21 nodules were included, 20% of them were pulmonary carcinomas and 80% were secondary nodules. 6 nodules presented an incomplete response.The appearance of a convex outline was the first sign of incomplete ablation. 5 out of 6 nodules had a nodular focal enhancement. The cumulative probability of overall survival at 12, 36, and 60 months was 80%, 66% and 39% with a median survival of 31 months. The number of nodules treated was found to be directly related to overall survival. The cumulative probability of progression-free survival was 65% at 12, 36 and 60 months. Pleural contact was the factor influencing progression-free survival.
CONCLUSION
Radiofrequency ablathermia is an effective technique. Regular CT monitoring allows early detection of tumor recurrence.
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