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Percutaneous cryoablation of small kidney tumours under magnetic resonance imaging guidance: medium-term follow-up

Caviezel, Alessandro
Published in Scandinavian Journal of Urology and Nephrology. 2008, vol. 42, no. 5, p. 412-416
Abstract OBJECTIVE: Minimally invasive treatment of small kidney tumours remains a challenge. Cryoablation has recently been advocated for such neoplasias. However, few series evaluating this therapeutic regimen are as yet available. The goal of this retrospective study was to evaluate the initial clinical experience of magnetic resonance imaging (MRI)-guided percutaneous cryotherapy of small renal tumours. MATERIAL AND METHODS: Seven patients with small renal tumours [mean diameter 21 (11-30) mm] underwent percutaneous renal tumour cryoablation using the Cryo-Hit delivery system. The procedure was performed in an MRI interventional unit, using a 0.23 Tesla open MRI imaging system. Five men and two women were included in the group. The average age was 61.5 (34-84) years. The patients had a solitary kidney (n = 2), renal insufficiency (n = 4) or a kidney graft (n = 1). The intervention was performed under general anaesthesia. Average time for the whole procedure was 235 min with 26 min of effective treatment time. Mean follow-up was 28 (7-43) months. RESULTS: All tumours were successfully ablated. There were no perioperative complications. Mean hospital stay was 2.4 (2-5) days. One patient stayed for 5 days because therapeutic anticoagulation had to be reinitiated. No significant change in the perioperative value of the serum creatinine was noticed. No radiographic evidence of disease recurrence or new tumour development was identified during the follow-up. CONCLUSIONS: In this small group of patients, percutaneous renal tumour cryoablation under MRI guidance was efficient and carried no morbidity. Hospital stay was remarkably shorter than that of surgically treated patients. At medium-term follow-up, no recurrence has been identified, but long-term follow-up is required.
Keywords AdultAgedAged, 80 and overAngiomyolipoma/pathology/*surgeryCarcinoma, Renal Cell/pathology/*surgeryCreatinine/bloodCryosurgery/*methodsFemaleFollow-Up StudiesHumansKidney Neoplasms/pathology/*surgeryLength of StayMagnetic Resonance Imaging/*methodsMaleMiddle AgedNeoplasm StagingPostoperative Complications/*bloodSurgery, Computer-Assisted/*methodsSurgical Procedures, Minimally Invasive/*methodsTumor Burden
PMID: 18609277
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Research groups Groupe Iselin Christophe (urologie) (106)
Imagerie et radiologie interventionnelle du foie, des voies biliaires et du pancréas (316)
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CAVIEZEL, Alessandro et al. Percutaneous cryoablation of small kidney tumours under magnetic resonance imaging guidance: medium-term follow-up. In: Scandinavian Journal of Urology and Nephrology, 2008, vol. 42, n° 5, p. 412-416. doi: 10.1080/00365590801951632 https://archive-ouverte.unige.ch/unige:19213

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Deposited on : 2012-03-27

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