title: Transient elastographic evaluation of subjects without known hepatic pathology: does age change the liver stiffness?
abstract: OBJECTIVE
  Chronic liver diseases are investigated through invasive (liver biopsy) or non-invasive (FibroScan or FibroTest) methods. Recently the non-invasive methods have become more and more popular. The aim of this paper is to evaluate the liver stiffness (LS) measured by transient elastography in individuals without known hepatic pathology ("normal" subjects) and to see if it is influenced by age.
  
  
  METHODS
  We examined a group of "normal" subjects by means of a FibroScan device (EchoSens, France). In each patient we performed 10 valid measurements and a median value was calculated by the device. The subjects were individuals without known hepatic pathology: healthy volunteers or patients from departments other than Gastroenterology in our hospital.
  
  
  RESULTS
  We evaluated 152 "normal" subjects (87 women and 65 men, mean age 45.3 + or - 17.6 years). The mean value of LS in "normal" subjects was 4.8 + or - 1.3 kPa, ranging from 2.3 to 8.8 kPa. The mean values of LS in age subgroups were: 18-29 years - 5 + or - 1.3 kPa; 30-39 years - 4.5 + or - 1.2kPa; 40-49 years - 5 = or - 1.1kPa; 50-59 years - 4.7 + or - 1.2kPa; 60-69 years - 5 + or - 1.3kPa; >70 years - 4.7 + or - 1.4kPa. There were no statistically significant differences between the mean values of LS in various age subgroups (p=0.5263).
  
  
  CONCLUSIONS
  The mean value of LS measured by transient elastography in "normal" subjects was lower than 5 kPa. Age does not modify the LS.
authors.affiliation: Department of Gastroenterology and Hepatology, "Victor Babeş" University of Medicine and Pharmacy Timişoara, Romania. roxanasirli@gmail.com
authors.forename: Roxana
authors.initials: R
authors.lastname: Sirli
authors.forename: Ioan
authors.initials: I
authors.lastname: Sporea
authors.forename: Adriana
authors.initials: A
authors.lastname: Tudora
authors.forename: Alexandra
authors.initials: A
authors.lastname: Deleanu
authors.forename: Alina
authors.initials: A
authors.lastname: Popescu