Immunohistochemical determination of estrogen and progesterone receptor positivity in uterine adenosarcoma.

Background: Given the paucity of data regarding hormone dependency, it was the purpose of this study to screen for the presence of estrogen and progesterone receptors in uterine adenosarcoma (UAS).

Methods: One hundred and five centers were asked to screen their files for uterine adenosarcomas. A immunohistochemical estrogen and progesterone receptor determination was performed.