Study of Cryotherapy for Renal Tumors


The purpose of this study is to study the change of tumor size and serum cytokine in the patients who received cryotherapy for the renal tumors.

Study Type

  • Study Type: Interventional
  • Study Design
    • Intervention Model: Parallel Assignment
    • Primary Purpose: Treatment
    • Masking: None (Open Label)
  • Study Primary Completion Date: December 2012


  • Procedure: cryotherapy
    • Placing 4-6 cryotherapy probes into the renal tumors and conducting two cycles of freezing and thawing

Arms, Groups and Cohorts

  • Experimental: Cryotherapy
    • The patients who receive cryotherapy for their renal tumors

Clinical Trial Outcome Measures

Primary Measures

  • Tumor size
    • Time Frame: 3 months

Participating in This Clinical Trial

Inclusion Criteria

  • The patients who have renal tumor less than 7 cm and receive cryotherapy

Exclusion Criteria

  • The tumor size is larger than 7 cm
  • The patients do not approve the surgery

Gender Eligibility: All

Minimum Age: N/A

Maximum Age: N/A

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • National Taiwan University Hospital
  • Provider of Information About this Clinical Study
    • Yeong-Shiau Pu, Department of Urology / National Taiwan University Hospital

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