Related Experiment Video
Updated: Aug 15, 2026
A New Technique for Treating Low-risk Prostate Cancer—Super Active Surveillance
Published on: November 7, 2025
[Cryosurgical ablation for 23 cases of prostate cancer guided by rectal ultrasound]
Qing Wu1, Xue-song Wang, Jian-xin Qian
1Department of Clinical Oncology, the Affiliated Changzheng Hospital of Second Military Medicine University of PLA, Shanghai. wuching@163.com
Objective:
To detect the short-term clinical and side effects of cryosurgical ablation for prostate cancer.
Methods:
The ENDOCAm cryosurgical system with 2 mm Cryo-probes was used to treat the prostate cancer guided by rectal ultrasonic. 1. Completeness of freeze; 2. Complications; 3. The changes of PSA and PSMA before and after operation were observed respectively.
Results:
1. The completeness of freeze rate and non-completeness of freeze rate were 34.8% (8/23) and 65.2% (15/23) showed by MRI 3 weeks later after operation; the biopsy results showed that tumor positive rates in completeness of freeze group and non-completeness of freeze group were 0 and 20% (3/15) respectively after 6 months. 2. The incontinence rate was 13%, and all recovered during 1 month; and the erectile dysfunction rate post-operation was 56.2% (9/16). 3. The levels of PSA before and after cryosurgical ablation were (32.98 +/- 35. 50) microg/L, (11.65 +/- 26. 51) microg/L respectively (P < 0.05). PSMA increased significantly after the cryosurgical ablation.
Conclusion:
The short-term curative effects of cryosurgical ablation, which guided by rectal ultrasound for prostate cancer is satisfied with low complication rate and minor vulnus.
