XXXX : CT-guided radiofrequency ablation--preliminary results.

@entity1 @entity101 @entity41 @entity1911 @entity882 @entity5 @entity2 @entity1358 @entity1410 @entity3 @entity320 @entity4304
PURPOSE: To evaluate initial experience with radiofrequency (RF) ablation of @entity4304 . MATERIALS AND METHODS: Thirteen adrenal masses in 12 @entity1 (bilateral @entity3 in one @entity1 ) were treated with computed tomography (CT)-guided percutaneous RF ablation. Eleven adrenal lesions were @entity3 (five from @entity2 , four from @entity1358 , and two from @entity320 ); one lesion was a @entity1911 and one was an aldosteronoma. There were 10 @entity1 and two @entity1 (average age, 58 years; range, 40-77 years) in the study; average adrenal mass diameter was 3.9 cm (range, 1-8 cm). Average number of RF applications per adrenal mass was 2.7 (range, 1-5 applications); average time per application was 7.8 minutes (range, 4-13 minutes). An internally cooled single electrode was used in five sessions; an internally cooled cluster electrode was used in eight sessions. RESULTS: Average follow-up was 11.2 months (range, 1-46 months). Eleven of 13 lesions were treated successfully with RF ablation after one session. Successful treatment was defined as lack of enhancement of the treated region on follow-up CT images and resolution of the biochemical abnormality in two @entity1 . In two @entity1 with large adrenal lesions (4 and 8 cm in diameter), enhancement of residual tissue was observed after one treatment session; this finding was indicative of @entity41 . One @entity1 with @entity882 that resulted from chemotherapy had a small @entity1410 , but no transfusion was required. No @entity1 developed @entity101 during the RF application. No @entity1 with @entity3 had recurrent @entity5 at the treated site, and this lack of recurrence indicated effective local control; 11 @entity1 had progression of @entity3 at extraadrenal sites. CONCLUSION: Preliminary data suggest that CT-guided RF ablation is an effective technique for local control of @entity4304 .
