Methods: To compare the architectural, nuclear and International Federation of Gynecology and Obstetrics (FIGO) grading systems in endometrial cancer 70 consecutive patients with endometrial cancer were retrospectively reevaluated with three grading systems.
Results: Twenty-eight (40%), 27 (38.6%) and 14 (20%) cases were reported to have different grades when architectural vs nuclear, architectural vs. FIGO and nuclear vs. FIGO grading systems were compared in evaluation, respectively. Only 3 (42.8%) of the seven died patients had grade 3 in all three grading systems. Five-year survival rates were 95.7, 80, and 78.6% for architectural grade 1, 2 and 3, respectively. Same rates were 96.7, 90.5, and 78.9% for nuclear and 96, 91.7 and 81% for FIGO grading systems, respectively.
Conclusions: Grades of the tumors often change when different grading systems are used. Postoperative treatment should be considered when at least one of the grading systems indicates poor differentiation.
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