BLADDER
Carcinoma.
—Barringer31 stated that the technic of the suprapubic method of implantation of radon seeds into vesical tumors as developed at the Memorial Hospital is comparatively simple. It has an operative mortality of between 3 and 4 per cent, yet is successful in controlling many tumors that are inoperable. It is especially successful in dealing with tumors of the base of the bladder and trigone.In some cases the implantation is not properly performed. There are two principal reasons for this: (1) The surgeon who is responsible for the diagnosis and the operation is usually not trained to give treatment with radium, and (2) an adequate number of radon seeds of a proper strength is often not available. For suprapubic implantation one should have at hand half again as many radon seeds as one thinks may be required, since neither cystoscopy nor a cystogram can possibly indicate the