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Estimation of liver fibrosis using elastography in cholestatic diseases: systematic review and meta-analysis
Natalia Marcos Carrasco1, Alejandro López Jerez2, Elena Garrido3
1Aparato Digestivo, Hospital Universitario Río Hortega, España.
Introduction:
staging fibrosis extent in liver disease is highly relevant for appropriate management. Liver biopsy remains the reference standard for assessment, but noninvasive methods such as elastography are becoming increasingly accurate and relevant. However, evidence regarding elastography in cholestatic diseases is lower than in other etiologies.
Methods:
we searched MEDLINE, EMBASE and Web of Science for publications on the diagnostic accuracy of transient elastography and sonoelastography in cholestatic diseases (PBC and PSC) using biopsy as the reference standard. A systematic review and meta-analysis of the results was then carried out.
Results:
a total of 13 studies were included. Using transient elastography in PBC sensitivity and specificity were estimated to be 0.76 and 0.93; 0.88 and 0.9; and 0.91 and 0.95 for ≥ F2, ≥ F3 and = F4, respectively. For sonoelastography in PBC sensitivity and specificity estimates were 0.79 and 0.82; 0.95 and 0.86; and 0.94 and 0.85 for ≥ F2, ≥ F3 y = F4, respectively. In PSC, transient elastography had a sensivity and specificity of 0.76 and 0.88; 0.91 and 0.86; and 0.71 and 0.93 for ≥ F2, ≥ F3 and = F4, respectively.
Conclusion:
elastography has adequate diagnostic accuracy in the assessment of fibrosis stages in cholestatic liver diseases.
