Vaginal recurrences of endometrial carcinoma: the prognostic value of staging by a primary vaginal carcinoma system.

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Fifty-five of 1716 women with endometrial carcinoma seen consecutively at three institutions prior to 1986 were found to have an isolated post-hysterectomy vaginal recurrence. Their therapy included external radiation therapy (RT) and brachytherapy for 26 women, external RT alone for 17, brachytherapy only for 4, and no RT for 8. Combined external RT/brachytherapy doses ranged from 2000 to 10,000 cGy with a median of 6000 cGy. The 3- and 5-year actuarial survival rates are 48% and 31% for the entire group, and the 3- and 5-year pelvic control rates are 52% and 42%. The 5-year survival and pelvic control rates for those who received greater than or equal to 6000 cGy in total RT dose are 47% and 68%, compared with 12% and 10% for those receiving less than 6000 cGy (p = 0.002 and p = 0.004). For patients receiving their second RT course, the 5-year survival rate is 16%, compared with 48% for those not previously irradiated. The Perez modification of the International Federation of Gynecology and Obstetrics (FIGO) staging system for primary vaginal carcinoma was applied to each recurrence. There were 15 Stage I cases (vaginal mucosa), 32 Stage II cases divided between 15 Stage IIA (subvaginal infiltration) and 17 in Stage IIB (parametrial infiltration), and 8 Stage III cases (pelvic wall involvement). The 3-year actuarial survival and pelvic control rates using this staging system are: Stage I: 85%/100%; Stage II: 41%/43%, Stage IIA: 59%/53%, Stage IIB: 26%/35%; Stage III: 13%/0%. These outcome endpoints are significantly better for Stage I than Stage II patients (p = 0.01 & 0.0004) and for Stages I and IIA compared to Stages IIB and III (p = 0.0005 & 0.002). The pre-treatment variables of age, interval since hysterectomy, initial stage, and location did not predict for survival, but a higher rate of pelvic control was observed for apical than for suburethral recurrences (56% vs. 20%). Grade III histology was highly correlated with poor survival (p = 0.0006). This vaginal carcinoma staging system appears to have value in predicting treatment outcome for patients with post-hysterectomy vaginal recurrences.





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Medicine and Health Sciences




Department of Obstetrics and Gynecology

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