The use of 99mtechnetium in the diagnosis of patent processus vaginalis.

We report 2 cases of scrotal swelling after placement of peritoneal catheters. 99mTechnetium intraperitoneal scanning was used to identify a patent processus vaginalis in each case. This simple, rapid, and nontoxic method can be used routinely to screen patients for a subclinical hernia before institution of intraperitoneal therapy.