Adjuvant whole abdominopelvic irradiation for high risk endometrial carcinoma.
Fifty-six patients with surgical Stage III or IV endometrial carcinoma, or earlier stage disease with two or more risk factors for peritoneal recurrence, were given postoperative whole abdomino-pelvic irradiation (WAPI) with nodal and vaginal boosts between November 1981 and May 1989. Mean age at diagnosis was 63 years. Twenty-seven patients were surgical Stage I-II, 17 Stage III, and 12 Stage IV. Thirty-seven (66%) had deep myometrial involvement, 34 (61%) had positive peritoneal cytology, 31 (55%) had high grade lesions, 20 (36%) had either serous-papillary or adenosquamous histologic variants, and 13 (23%) had up to 2 cm residual disease remaining after surgery. Mean overall follow-up was 45 months. The 7-year actuarial survival was 63.8% with a 7-year disease-free survival (DFS) of 60.9%. By surgical stage, the 7-year DSF was 77.1% for Stage I-II, 57.8% for Stage III, and 25.0% for Stage IV (p = 0.006). The 7-year DSF was 79.8% for those with lesions of Broder's grade 1 or 2, and 46.9% for grades 3 or 4 (p = 0.001). Multivariate analysis demonstrated that of all covariates considered, only surgical stage and histologic grade had prognostic significance for survival and disease-free survival. Acute toxicity has been common but mild; chronic toxicity has been almost entirely subclinical with the exception of three cases of moderate to severe bowel toxicity. These results suggest that post-operative WAPI is a safe and efficacious treatment alternative for patients with surgical Stage I through III high-risk endometrial carcinoma.
Radiation Oncology, William Beaumont Hospital, Royal Oak, MI 48073.
S
S
Gibbons
A
A
Martinez
M
M
Schray
K
K
Podratz
R
R
Stanhope
G
G
Garton
S
S
Weiner
D
D
Brabbins
G
G
Malkasian
D000230:Adenocarcinoma / Q000453:epidemiology / Q000532:radiotherapy* / Q000601:surgery; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002291:Carcinoma, Papillary / Q000453:epidemiology / Q000532:radiotherapy* / Q000601:surgery; D002294:Carcinoma, Squamous Cell / Q000453:epidemiology / Q000532:radiotherapy* / Q000601:surgery; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D008875:Middle Aged; D011446:Prospective Studies; D011882:Radiotherapy, High-Energy / Q000009:adverse effects; D016019:Survival Analysis; D015996:Survival Rate; D014594:Uterine Neoplasms / Q000453:epidemiology / Q000532:radiotherapy* / Q000601:surgery