Adjunctive radiation after radical hysterectomy in stage IB squamous cell carcinoma of the cervix.

The clinical-pathologic records of 178 women with stage IB squamous cell carcinoma treated by radical hysterectomy and pelvic node dissection were reviewed to assess prognostic factors and outcome in relation to adjunctive pelvic radiation. Among 32 women with pelvic nodes metastases, 19 treated with adjunctive radiation had longer recurrence-free intervals and more extrapelvic metastases than 13 nonirradiated women. However, among irradiated women recurrences were more rapidly fatal, so that the survival of the two groups was similar. Among 54 women with deeply invading (10 mm or more) carcinomas confined to the uterus, 17 with adjunctive radiation had recurrence-free intervals and survivals similar to 37 women without radiation, despite more high-risk factors in the irradiated group. The findings suggest that adjunctive pelvic radiation may control pelvic recurrence but not extend survival.