Simultaneous biopsy and radiofrequency ablation of T1a renal cell carcinoma

T. Iguchi, T. Hiraki, K. Tomita, H. Gobara, Hiroyasu Fujiwara, J. Sakurai, Y. Matsui, Susumu Kanazawa

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Objective: The goal of this study was to retrospectively evaluate the outcome, including feasibility, safety, diagnostic yield, and factors affecting the success of computed tomography fluoroscopy-guided biopsy when performed during the same procedure than radiofrequency ablation (RFA) in renal tumors strongly suspected of being T1a renal cell carcinoma (RCC). Materials and methods: Nineteen patients (13 men, 6 women; mean age, 66.7 years) with a total of 19 suspected renal tumors (mean diameter, 1.8cm) underwent computed tomography fluoroscopy-guided biopsy during (n=6) or immediately after (n=13) RFA. All patients were strongly suspected of having RCC on the basis of patient's medical histories and/or the results of imaging investigations. All procedures were divided into diagnostic and non-diagnostic biopsies. Various variables were compared between the 2 groups using univariate analysis. Results: In all tumors, biopsy procedures were technically feasible. No major complications were observed, except for 8 minor post-procedural bleedings. All but one tumor was completely ablated. Local recurrence in the ablation zone as well as tumor seeding in retroperitoneal fat occurred in 1 patient 8.5months after the procedure and were successfully treated with further percutaneous cryoablation. Thirteen tumors were diagnosed as RCC, whereas 6 were ultimately found to contain normal renal tissue (n=5) or connective tissue (n=1). Univariate analysis revealed that none of the variables were significantly different between the diagnostic and non-diagnostic biopsies. Conclusion: The performance of renal tumor biopsy and RFA in the same session is feasible and safe. Although pre-treatment pathological diagnosis would be generally desirable, simultaneous biopsy with RFA can be an option for the patients who are not amenable to pre-treatment biopsy.

Original languageEnglish
Pages (from-to)1159-1164
Number of pages6
JournalDiagnostic and Interventional Imaging
Issue number11
Publication statusPublished - Nov 2016


  • Biopsy
  • Radiofrequency ablation
  • Renal cell carcinoma

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging


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