Serum levels of CA-125 in patients with endometriosis: a preliminary report.

@article{Giudice1986SerumLO,
  title={Serum levels of CA-125 in patients with endometriosis: a preliminary report.},
  author={Linda C. Giudice and Allan Joel Jacobs and Julia Urbina Pineda and Colleen E. Bell and Lynne Lippmann},
  journal={Fertility and sterility},
  year={1986},
  volume={45 6},
  pages={
          876-8
        }
}
Seven out of 8 patients with endometriosis demonstrated levels of CA-125 antigen above 35 U/ml. None of 15 patients with other benign gynecologic diagnoses demonstrated elevated levels. This antigen has been proposed as a tumor marker for epithelial carcinoma and other gynecologic neoplasms. However, it cannot be used to differentiate clinically between cancer and endometriosis. 
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