1. The utility of real-time elastography in diagnosing cervical cancer and cervical intraepithelial neoplasia – final results.
- Author
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Dudea-Simon, Marina, Dudea, Sorin, Burde, Alexandru, Ciortea, Răzvan, Măluţan, Andrei, and Mihu, Dan
- Subjects
CERVICAL intraepithelial neoplasia ,CERVICAL cancer ,ELASTOGRAPHY ,RECEIVER operating characteristic curves - Abstract
Introduction. The aim of the study is to analyze the utility of real-time elastography (RTE) in diagnosing cervical cancer (CC) and cervical intraepithelial neoplasia (CIN), using an experimental device (ED) made from a synthetic material as benchmark of rigidity. Methodology. Seventy-nine patients were involved in the study, being divided into three groups: Group 1 – benign cervix (n=39); Group 2 – CIN (n=32); Group 3 – CC (n=8). Seventy-nine identical silicone DEs were created. RTE was performed and the strain ratio (SR) method was used to quantify stiffness, representing the ratio of stiffness between the analyzed cervical tissue and ED. The average SR values corresponding to each group were compared. The diagnostic performance of the method was evaluated by generating the ROC curve and analyzing the area under the curve (AUC). Cut-off values were set. The histopathological results were the benchmark for data interpretation. Results. The average value of SR for Group 1 was significantly different from that of Groups 2 and 3 (p=0.001). After the exclusion of two aberrant values from Group 3, attributed to complicated cases with hemorrhagic necrosis, significant differences of the average SR between Groups 2 and 3 were observed (p=0.02). For Groups 1 and 3, the AUC was 0.966, with 95% CI (0.914-1.000); the cut-off value of the SR was 1.42, with a sensitivity of 100% and a specificity of 94.9%. The AUC was 0.752, with 95% CI (0.629-0876) for Groups 1 and 2; the sensitivity and specificity were 75%, respectively 74% for the cut-off value of 1.03. Conclusions. RTE, quantified by SR, using a synthetic reference material, seems a reliable method of differentiating the benign cervix from the malignant one; the technique proves promising results as a complementary method in CIN evaluation and diagnosis. Nevertheless, SR becomes inoperative in cases of cancer complicated by extensive hemorrhagic necrosis. [ABSTRACT FROM AUTHOR]
- Published
- 2020