title: [Comparison of the M and XL FibroScan(®) probes to estimate liver stiffness by transient elastography].
abstract: The FibroScan(®) XL probe has been specifically designed for obese patients to measure liver stiffness by transient elastography, but it has not been well tested in non-obese patients. The aim of this study was to compare the M and XL FibroScan(®) probes in a series of unselected obese (body mass index above 30 kg/m(2)) and non-obese patients with chronic liver disease. Two hundred and fifty-four patients underwent a transient elastography examination with both the M and XL probes. The results obtained with the two probes were compared in the whole series and in obese (n=82) and non-obese (n=167) patients separately. The reliability of the examinations was assessed using the criteria defined by Castéra et al. The proportion of reliable exams was significantly higher when the XL probe was used (83% versus 73%; P=.001). This significance was maintained in the group of obese patients (82% versus 55%; P<.001), but not in the non-obese patients (84% versus 83%). Despite a high correlation between the stiffness values obtained with the two probes (R=.897; P<.001), and a high concordance in the estimation of fibrosis obtained with the two probes (Cronbach's alpha value: 0.932), the liver stiffness values obtained with the XL probe were significantly lower than those obtained with the M probe, both in the whole series (9.5 ± 9.1 kPa versus 11.3 ± 12.6 kPa; P<0.001) and in the obese and non-obese groups. In conclusion, transient elastography with the XL probe allows a higher proportion of reliable examinations in obese patients but not in non-obese patients. Stiffness values were lower with the XL probe than with the M probe.
authors.affiliation: Unidad de Hepatología, Clínica Universidad de Navarra, Pamplona, España; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), España. Electronic address: iherrero@unav.es.
authors.forename: José Ignacio
authors.initials: JI
authors.lastname: Herrero
authors.affiliation: Unidad de Hepatología, Clínica Universidad de Navarra, Pamplona, España; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), España.
authors.forename: Mercedes
authors.initials: M
authors.lastname: Iñarrairaegui
authors.affiliation: Unidad de Hepatología, Clínica Universidad de Navarra, Pamplona, España; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), España.
authors.forename: Delia
authors.initials: D
authors.lastname: D'Avola
authors.affiliation: Unidad de Hepatología, Clínica Universidad de Navarra, Pamplona, España; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), España.
authors.forename: Bruno
authors.initials: B
authors.lastname: Sangro
authors.affiliation: Unidad de Hepatología, Clínica Universidad de Navarra, Pamplona, España; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), España.
authors.forename: Jesús
authors.initials: J
authors.lastname: Prieto
authors.affiliation: Unidad de Hepatología, Clínica Universidad de Navarra, Pamplona, España; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), España.
authors.forename: Jorge
authors.initials: J
authors.lastname: Quiroga
mesh_terms: D000328:Adult; D000368:Aged; D001707:Biopsy, Needle; D054459:Elasticity Imaging Techniques / Q000295:instrumentation*; D005234:Fatty Liver / Q000000981:diagnostic imaging / Q000209:etiology / Q000473:pathology; D019693:Hepatitis, Autoimmune / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology; D006525:Hepatitis, Viral, Human / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D008099:Liver / Q000000981:diagnostic imaging* / Q000473:pathology; D008104:Liver Cirrhosis, Alcoholic / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology; D008111:Liver Function Tests; D016031:Liver Transplantation; D024821:Metabolic Syndrome / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology; D008875:Middle Aged; D009765:Obesity / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000473:pathology; D011446:Prospective Studies; D015203:Reproducibility of Results
keywords: Elastografía; Elastography; Fibrosis hepática; Liver fibrosis; Liver stiffness; Obesidad; Obesity; Rigidez hepática