Percutaneous radiofrequency and microwave ablation in the treatment of renal tumors – 10 years of experience

Petr Dvorak; Petr Hoffmann; Milos Brodak; Josef Kosina; Jaroslav Pacovsky; Jan Raupach; Antonin Krajina

doi:10.5114/wiitm.2017.72322

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abstract:

Original paper

Percutaneous radiofrequency and microwave ablation in the treatment of renal tumors – 10 years of experience

Petr Dvorak

,

Petr Hoffmann

,

Milos Brodak

,

Josef Kosina

,

Jaroslav Pacovsky

,

Jan Raupach

,

Antonin Krajina

Videosurgery Miniinv 2017; 12 (4): 394–402

DOI: https://doi.org/10.5114/wiitm.2017.72322

Online publish date: 2017/12/29

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Introduction: The standard radical treatment of renal cell carcinoma is surgical resection, but it is not suitable for patients with serious medical comorbidities and solitary kidney tumors. Minimally invasive ablation techniques could be an appropriate therapeutic alternative.

Aim: To retrospectively evaluate the technical success, mid-term and long-term efficacy and safety of radiofrequency and microwave ablation in patients with small renal tumors.

Material and methods: Over the course of 10 years, 91 ablation procedures in 64 patients for 68 tumors, of size 12–60 mm, were performed using only conscious sedation. These ablations were done under the guidance of computed tomography. We treated 41 males and 23 females with solitary kidney tumors (14 cases) and tumors in non-surgical candidates (54 cases).

Results: In 50 (73.5%) tumors single treatment was successful; in 13 (19.1%) cases a second procedure was used successfully, and in the 5 largest tumors (sizes 45–60 mm, 7.4%) a third treatment was necessary. Within the follow-up 10 (15.6%) patients died, but none due to metastatic renal cell carcinoma. Only 1 serious complication was observed – retroperitoneal and psoatic hematoma. Early recurrence occurred in 18 (26.5%) tumors. Late recurrence was detected in 5 (7.4%) cases. In all cases complete local control of the renal tumors was reached.

Conclusions: Percutaneous ablation is a very effective treatment for patients with small renal tumors of the T1a group with a minimal complication rate.

keywords:

Percutaneous radiofrequency and microwave ablation in the treatment of renal tumors – 10 years of experience

Petr Dvorak , Petr Hoffmann , Milos Brodak , Josef Kosina , Jaroslav Pacovsky , Jan Raupach , Antonin Krajina

radiofrequency ablation, microwave ablation, small renal tumors, minimally invasive therapy

Petr Dvorak

,

Petr Hoffmann

,

Milos Brodak

,

Josef Kosina

,

Jaroslav Pacovsky

,

Jan Raupach

,

Antonin Krajina