[A comparative evaluation of methods for diagnosing recurrence of rectal cancer after radical surgery].

As a result of a study of 173 cases of rectal cancer, applicability of bleomycin-111indium for diagnosis of tumor recurrences was shown. Assays of carcinoembryonic antigen (CEA) as a separate diagnostic procedure proved inadequate due to their low sensitivity (42.1%). Since the effectiveness of ultrasonography application in diagnosing rectal cancer was as high as 91%, it should be recommended for follow-up of radically operated patients.