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Int J Gynecol Pathol. 2001 Jul;20(3):267-70.

Ovarian endometriosis and clear cell carcinoma, leiomyomatosis peritonealis disseminata, and endometrial adenocarcinoma: an unusual, pathogenetically related association.

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Departamento de Anatomía Patológica, Hospital Virgen del Camino, C/Irunlarrea 4, 31008 Pamplona, Spain.


A 42 year-old female with a preoperative clinical diagnosis of ovarian cancer underwent laparotomy which revealed leiomyomatosis peritonealis disseminata (LPD) in the peritoneum and omentum and a left ovarian endometriotic cyst associated with a clear cell carcinoma. A grade 1, superfically invasive villoglandular endometrial endometrioid adenocarcinoma was also found. Microscopically, the endometriotic cyst wall contained an extensive peripheral band-like condensation of stromal cells. These cells were strongly positive for alpha inhibin and may have been the hormonal source responsible for the induction of the simultaneous LPD and endometrial adenocarcinoma. It is proposed that endometriosis is not only a precursor of clear cell carcinoma but, through secondary hormonal induction of the surrounding ovarian stroma, may also provide a hormonal stimulus for diverse proliferative processes.

[Indexed for MEDLINE]

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