Noninvasive screening for liver fibrosis and portal hypertension by transient elastography--a large single center experience

2012 Wiener Klinische Wochenschrift 124;11-12 (395-402)

BACKGROUND: Transient elastography (TE) is a noninvasive tool to assess hepatic fibrosis by measuring liver stiffness (LS). Recent studies suggest that TE may be used to screen for liver cirrhosis and clinically significant portal hypertension (>/= 10 mmHg; CSPH), whereas data on the clinical applicability of TE are limited. METHODS: Among 695 patients undergoing measurement of LS, data on liver biopsies and on hepatic venous pressure gradient (HVPG) were available in 290 and 502 patients, respectively. Analysis of the area under the receiver operating curve (AUC) was used to assess the positive (PPV) and negative predictive (NPV) values of LS cut-offs for staging of hepatic fibrosis and for diagnosis of CSPH. RESULTS: LS was significantly associated with fibrosis stage (R = 0.872;p 7.2 kPa) was 0.690, 0.737 for F3 (> 9.6 kPa), and 0.904 for F4 (> 12.1 kPa), respectively. At a LS cut-off of 12.1 kPa the PPV and NPV for diagnosis of cirrhosis were 87 and 91 %, respectively. A significant correlation of LS and HVPG was noted (R = 0.794;p

Pubmed : 22699260