Oncofetal antigens as tumor markers in the cytologic diagnosis of effusions
- PMID:6196931
Oncofetal antigens as tumor markers in the cytologic diagnosis of effusions
Abstract
To test the value of oncofetal antigens in the cytologic diagnosis of effusions, immunoperoxidase staining with antisera to carcinoembryonic antigen (CEA), alpha fetoprotein (AFP), pregnancy-specific beta 1-glycoprotein (SP1) and placental alkaline phosphatase (PLAP) was carried out on pleural and peritoneal fluids from 72 cases. Sections of formalin-fixed, paraffin-embedded cell blocks were used in most cases; cytocentrifuge preparations were used in some. Reactions were negative with all antisera in 23 of 24 nonmalignant effusions as well as in all 7 cases of malignant mesothelioma and 4 cases of malignant lymphoma. In 24 of 36 confirmed carcinomatous effusions, staining was positive with one or more antisera, including anti-CEA positivity in 23 of the 24 cases. In 5 of the 24 cases with positive staining, a confident diagnosis of malignancy had not been made on routine cytologic preparations. Immunoperoxidase staining for CEA appears to be of supportive value in the cytologic diagnosis of malignancy in effusions.
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