Abstract
The aim of this study was to study the presence of cytokeratin 19 (CK19)-expressing cancer cells in the blood of preoperative patients with FIGO stage Ib and IIb cervical cancers who received radical hysterectomy and to investigate the cells' clinical significance. CK19 mRNA in the blood cells of the patients was detected preoperatively by a newly designed nested reverse transcriptase-polymerase chain reaction, which excluded pseudogenes a and b, performed on 84 patients with stage Ib and IIb cervical carcinoma. Possible correlations between clinicopathological factors were then analyzed. The sensitivity of this assay was 1 CK19-mRNA-positive cell per 10(6) peripheral blood mononuclear cells. Results showed that 21.4% of the 84 patients with cervical carcinoma had CK19-mRNA-positive cells in the blood, in comparison with 5.7% of the 35 patients with benign gynecological tumors and 0% of the 28 healthy controls (P = 0.037 and 0.006, respectively). The positive tests in the cervical cancer patients were not associated with prognostic factors including stage, pelvic lymph node metastasis, pathological types, bulky tumor size (> or =4 cm), differentiation, parametrial extension, lymphovascular space involvement, deep stromal invasi...Continue Reading
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