Treatment of Primary and Metastatic Bone Tumors by Cryosurgery

The first patient treated by cryosurgery (Fig 1) on Feb 10, 1964, was a 48-year-old man whose lung cancer had spread to the humerus. The painful metastasis was unrelieved by two courses of x-ray therapy, and, therefore, we decided to attempt to freeze the lesion.¹The relief of pain in the arm was