Study of Cryotherapy for Renal Tumors

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.

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