Figure 1. Spontaneous regression of lung metastases after cryoablation for metastatic prostate cancer.

(A) Pelvic magnetic resonance imaging of a 78-year-old man with metastatic prostate carcinoma (Stage T3bN0M1c). This lesion was treated with cryoablation. (B) Pelvic magnetic resonance imaging 1 month post-treatment appeared inactive. (C) Computed tomography scans of pulmonary metastasis of the patient before treatment revealed multiple metastases in lung tissues (red arrow). (D) Computed tomography scans of pulmonary metastasis of the patient 1 month post-treatment indicated regression of lesions in lung tissues (red arrow).