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  • Title: Small cell carcinoma of pulmonary type inside a microinvasive mucinous cystadenocarcinoma of the ovary: a case report.
    Author: Grandjean M, Legrand L, Waterkeyn M, Baurain JF, Jadoul P, Donnez J, Marbaix E.
    Journal: Int J Gynecol Pathol; 2007 Oct; 26(4):426-31. PubMed ID: 17885493.
    Abstract:
    We report the occurrence of a small cell carcinoma of pulmonary type developed within a large borderline mucinous cystic tumor of the ovary, with another focus of microinvasive mucinous adenocarcinoma, in a 32-year-old woman. The small cell carcinoma expresses several neuroendocrine markers, thyroid transcription factor 1 and parathyroid hormone. Carbohydrate antigen 15.3 and carcinoembryonic antigen were focally detected but not cancer antigen 125. Cytokeratin 20 was immunolabeled in several mucinous carcinomatous glands but not in the neuroendocrine cells. The p53 protein was abnormally abundant, including in the borderline tumor. Progesterone receptor was heterogeneously immunodetected, whereas estrogen receptor labeling was weak and limited. This unusual immunohistochemical pattern further enhances the singularity of this quite exceptional tumor association.
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