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  • Title: Endometrial adenocarcinoma: therapeutic impact of preoperative histopathologic examination of endometrial tissue.
    Author: Oakley G, Nahhas WA.
    Journal: Eur J Gynaecol Oncol; 1989; 10(4):255-60. PubMed ID: 2776782.
    Abstract:
    Adenocarcinoma of the endometrium is diagnosed by the histologic evaluation of endometrial tissue. In stage I disease, five-year survival depends upon a number of prognostic factors. Histologic grade and type of carcinoma are most important. The need for pelvic and para-aortic lymphadenectomy is often based on the preoperative histologic grade and type of tumor. The purpose of this study was: 1) to compare preoperative histology of endometrial carcinoma to that found at hysterectomy, 2) to determine if preoperative histology can accurately predict depth of myometrial invasion or extra-uterine spread, 3) to determine whether para-aortic lymphadenectomy could be deleted based only on the preoperative finding of well differentiated carcinoma. In 19 (28%) of the 68 patients studied, the histologic grade or pattern at hysterectomy was different from that found preoperatively. In seven (13%) of the 52 "good prognosis" patients with grades 1 and 2 preoperative histology, hysterectomy revealed a more serious histologic type. Three of the seven (43%) had extrauterine spread. In the 16 "poor prognosis" patients with preoperative grade 3 or papillary serous/clear cell carcinoma, 14 (88%) had a similar histologic pattern at hysterectomy. Three of these patients had metastatic disease. Depth of myometrial invasion could not be predicted by preoperative histology even though the data suggested that extrauterine spread could. Clinical stage I endometrial carcinoma, grade 1 or 2, should not be treated without para-aortic nodal sampling based only on a supposedly favorable preoperative histologic pattern. Confirmed para-aortic nodal disease will alter the fields of post-operative radiation therapy should that become necessary. In these patients, however, pelvic lymphadenectomy is not justified.2 +
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