Background The CYFRA 21–1, a newly developed sandwich enzyme-linked immunosorbent
assay (ELISA), was used to measure soluble cytokeratin 19 fragment in serum that is …

CYFRA 21-1 is a tumor marker that is useful for detecting squamous cell carcinoma (SCC) of
the lung. Tissue polypeptide specific antigen (TPS) is a tumor marker that indicates tumor …

Background CYFRA 21‐1, a constituent of the intermediate filament proteins of epithelial
cells, is known to be increased in many cancers. This study was designed to estimate the …

BACKGROUND: High preoperative serum CYFRA 21-1 has been reported as diagnostic
marker and poor prognostic factor in non-small cell lung cancer, especially in squamous cell …

Background/Aim: The aim of this study was to analyze the pretreatment cytokeratin serum
levels in head and neck squamous cell carcinoma (HNSCC) by three assays in relation to …

Background We aimed to assess the prognostic value of CYFRA 21-1 in a series of patients
with anal canal squamous cell carcinoma treated by radiation-based therapy. Methods All …

The role of serum CYFRA 21-1 level in patients with non-small cell lung cancer (NSCLC)
remains to be defined. To re-evaluate the impact of serum CYFRA 21-1 in NSCLC survival …

This study was conducted to determine a potential use of CYFRA 21-1 in patients suffering
from carcinoma of the esophagus. CYFRA 21-1 serum concentrations of 50 patients with …

Background Prognostic value of serum cytokeratin fraction 21‐1 (CYFRA 21‐1) has not
been fully validated for nasopharyngeal carcinoma (NPC). Methods Serum CYFRA 21‐1 …

Local and neck recurrences of squamous cell carcinoma of the head and neck (SCCHN)
can mostly be detected early when the patient has regular follow-ups. Distant metastases …