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Related Experiment Videos

Prophylactic oophorectomy: a morphologic and immunohistochemical study.

Peter W Schlosshauer1, Carmel J Cohen, Frederique Penault-Llorca

  • 1Department of Pathology, Mount Sinai School of Medicine, New York, New York 10029, USA. peter.schlosshauer@mountsinai.org

Cancer
|December 12, 2003
PubMed
Summary
This summary is machine-generated.

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Ovarian dysplasia, characterized by subtle epithelial changes, shows molecular evidence of preneoplasia. Increased expression of Ki-67 and p53 in ovarian surface epithelium supports this concept.

Area of Science:

  • Gynecologic Pathology
  • Ovarian Cancer Research
  • Molecular Oncology

Background:

  • Ovarian carcinoma tumorigenesis remains poorly understood.
  • Investigating preneoplastic changes in ovarian surface epithelium is crucial.
  • This study examines morphologic and immunohistochemical markers in ovarian tissues.

Purpose of the Study:

  • To identify potential preneoplastic alterations in ovarian surface epithelium.
  • To evaluate neoplasia-associated markers in normal, prophylactically removed, and cancerous ovaries.
  • To correlate morphologic findings with immunohistochemical expression patterns.

Main Methods:

  • Evaluated morphologic features and immunohistochemical expression of CA-125, Ki-67, p53, E-cadherin, and Bcl-2.
  • Utilized formalin-fixed, paraffin-embedded tissues from 21 normal ovaries, 31 prophylactically removed ovaries, and 7 ovarian carcinomas.

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  • Employed statistical analyses including Fisher exact tests and Spearman rank correlation, with independent evaluation by three gynecologic pathologists.

    • Main Results:

    • Progressive increase in Ki-67 and p53 expression from normal to prophylactically removed to cancerous ovaries.
    • Similar increasing trend observed for CA-125 expression.
    • Ki-67 and p53 positivity were concentrated in inclusion cysts and deep invaginations, including hyperplastic/dysplastic areas.

    Conclusions:

    • Biologic and molecular evidence supports preneoplastic changes in ovarian surface epithelium.
    • Findings support the concept of ovarian dysplasia.
    • Subtle morphologic alterations in ovarian epithelium may hold significant biological importance.