Abstract
Current ideas on Müllerian tumors of the ovary are applied to the classification of endometrial adenocarcinomas, which are divided into four main histotypes: Type 1 or homologous or endometrioid (65 % of cases); Type 2 or Fallopianlike (15.8 %); Type 3 or cervical-like (13.4%) and Type 4 or unclassifiable (5%). This classification aims to provide a useful morphological criterion for forecasting the sensitivity of endometrial adenocarcinomas to endocrine treatment with progestational agents. Type 1 accounts for about 80 % of all adenocarcinomas of the endometrium in the fifth decade of life, which is supposed to be the period most exposed to estrogenic stimulation. These adenocarcinomas represent only 14 % of all endometrial adenocarcinomas. The above results are based on a 155-case series.
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