Single-antenna microwave ablation under contrast-enhanced ultrasound guidance for treatment of small renal cell carcinoma: preliminary experience.
The purpose of this study was to determine the safety, effectiveness, and feasibility of microwave ablation (MWA) of small renal cell carcinomas (RCCs) in selected patients. Institutional review board and informed consent were obtained. From December 2007 to January 2009, 12 patients (8 male, 4 female) were enrolled in a treatment group, in which percutaneous MWA of small RCCs was performed under contrast-enhanced ultrasound guidance. The tumors were 1.7-2.9 cm in diameter (mean diameter, 2.0 cm).Therapeutic effects were assessed at follow-up with computed tomography. All patients were followed up for 3-14 months (mean, 6 months) to observe the therapeutic effects and complications (according to SIR classification). Assessment was carried out with CT imaging. No severe complications or unexpected side effects were observed after the MWA procedures. In all cases technical success was achieved. Clinical effectiveness was 100%; none of the patients showed recurrence on imaging. In conclusion, our preliminary results support the use of MWA for the treatment of small renal tumors. This technology can be applied in select patients who are not candidates for surgery, as an alternative to other ablative techniques.
Carrafiello
Gianpaolo
G
Department of Radiology, University of Insubria, Viale Borri 57, Varese 21100, Italy. gcarraf@tin.it
Mangini
Monica
M
Fontana
Federico
F
Recaldini
Chiara
C
Piacentino
Filippo
F
Pellegrino
Carlo
C
Laganà
Domenico
D
Cuffari
Salvatore
S
Marconi
Alberto
A
Fugazzola
Carlo
C
D000368:Aged; D000369:Aged, 80 and over; D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery*; D017115:Catheter Ablation / Q000295:instrumentation* / Q000379:methods; D015331:Cohort Studies; D003287:Contrast Media; D005240:Feasibility Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007150:Immunohistochemistry; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery*; D008297:Male; D008872:Microwaves / Q000627:therapeutic use; D009367:Neoplasm Staging; D011182:Postoperative Care / Q000379:methods; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000503:physiopathology; D011859:Radiography; D012189:Retrospective Studies; D018570:Risk Assessment; D013997:Time Factors; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional
D003287:Contrast Media