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  5. Biomedical And Clinical Sciences
  7. Oncology And Carcinogenesis
  9. Predictive And Prognostic Markers
  11. [application Of Prame Immunohistochemistry In The Differential Diagnosis Of Primary Endometrial And Endocervical Adenocarcinomas]

[Application of PRAME immunohistochemistry in the differential diagnosis of primary endometrial and endocervical adenocarcinomas]

X Wei1, Z Zheng1, Q Y Shi1

  • 1Department of Pathology, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China.

Zhonghua Bing Li Xue Za Zhi = Chinese Journal of Pathology
|June 3, 2024

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View abstract on PubMed

Summary
This summary is machine-generated.

Preferentially expressed antigen in melanoma (PRAME) immunohistochemistry is a valuable tool for distinguishing endometrial from cervical adenocarcinomas. PRAME staining shows high sensitivity and specificity, aiding in accurate cancer diagnosis.

Area of Science:

  • Gynecologic Pathology
  • Oncology
  • Immunohistochemistry

Background:

  • Distinguishing between primary endometrial and endocervical adenocarcinomas is crucial for appropriate patient management.
  • Accurate differential diagnosis can be challenging based on routine histomorphology alone.

Purpose of the Study:

  • To evaluate the diagnostic utility of preferentially expressed antigen in melanoma (PRAME) immunohistochemical staining.
  • To assess PRAME's efficacy in differentiating primary endometrial and endocervical adenocarcinomas.

Main Methods:

  • Retrospective analysis of 87 endometrial and 63 cervical adenocarcinoma cases.
  • PRAME immunohistochemical staining was performed on all collected tissue samples.
  • Statistical analysis of PRAME expression differences between the two cancer types.

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Main Results:

  • Positive PRAME staining was observed in 89.7% of endometrial adenocarcinomas versus 3.2% of cervical adenocarcinomas.
  • PRAME demonstrated a sensitivity of 89.7% and specificity of 96.8% for differentiating endometrial from cervical adenocarcinoma.
  • For non-clear cell carcinomas, PRAME achieved 91% sensitivity and 100% specificity.

Conclusions:

  • Immunohistochemical staining for PRAME reveals significant differences between endometrial and cervical adenocarcinomas.
  • PRAME serves as a valuable auxiliary diagnostic marker for the differential diagnosis of these gynecologic malignancies.
  • PRAME is particularly effective in distinguishing non-clear cell endometrial and cervical adenocarcinomas.