PMID: 7538933Feb 1, 1995Paper

Diagnostic and prognostic value of the new tumour marker CYFRA 21-1 in patients with squamous cell lung cancer

The European Respiratory Journal
J NiklinskiJ Laudanski

Abstract

We wanted to investigate the diagnostic and prognostic significance of serum CYFRA 21-1, especially in predicting the risk of recurrence in patients with operable squamous cell lung cancer. Serum levels of CYFRA 21-1 were measured using an immunoradiometric assay (CIS bio) in 76 patients with squamous cell lung cancer (64 operable and 12 with unresectable tumours), 22 with other non-small-cell type (12 with adenocarcinoma and 10 with large-cell type) and 45 with nonmalignant lung diseases. Elevated preoperative CYFRA 21-1 levels were identified in 63% of patients with squamous cell type (SqCC), 33% with adenocarcinoma, and 30% with large-cell carcinoma type. The diagnostic specificity of the assay was 96%. Positive CYFRA 21-1 levels were observed in 33% of stage I, 52% of stage II, 76% of stage IIIa and 83% of stage IIIb patients with SqCC type. Statistically significant differences were obtained between stages I and II and between II and IIIa, but not between stages IIIa and IIIb. Recurrence-free survival probability for patients with elevated serum CYFRA 21-1 levels before surgery was 63% (24/38) versus 92% (24/26) for patients with normal serum CYFRA 21-1 levels. However, the difference was not statistically significant when...Continue Reading

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