Abstract
Day-to-day observations were made on the ureterograms after extensive hysterectomy in cancer of the cervix to reach the conclusion as follows. (1) Combined use of X-ray television is advantageous in detecting ureteral impairment after operation on cancer of the cervix. (2) Ureteral impairment after operation on cancer of the cervix starts developing relatively early after operation. (3) It is 3 to 4 days after operation that the impairment is most severe. (4) The impairment heads for recovery after the seventh day, but it persists in serious cases. (5) Judging from the findings above, there is a possibility that the ureteral impairment after operation on cancer of the cervix can be recovered to some extent. (6) Our impression is that if apreventive step for the ureteral impairment is necessary, carrying it out within seven days will be effective.