Journal of Clinical Pathology 2009;62:1043-1045
SHORT REPORTS
Werner syndrome as a possible cause of non-alcoholic steatohepatitis
1 Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Gunma, Japan
2 Department of Internal Medicine, Itami City Hospital, Hyogo, Japan
3 Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, Osaka, Japan
Correspondence to Dr K Sato, Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, 3-39-15 Showa, Maebashi, Gunma 371-8511, Japan; satoken{at}showa.gunma-u.ac.jp
Non-alcoholic steatohepatitis (NASH) is characterised by steatosis, liver cell injuries, the presence of a mixed inflammatory lobular infiltrate, and variable degrees of fibrosis. Werner syndrome (WS) is a rare autosomal recessive disease characterised by the premature onset of multiple age-related disorders. Central obesity and insulin resistance are common symptoms of both NASH and WS. Three cases were studied to evaluate the association between WS and NASH. NASH was diagnosed by liver biopsies and imaging studies following the exclusion of alcohol consumption, viral disease or autoimmune liver disease. Liver histology was compatible with NASH in all cases. Liver dysfunction, hyperlipidaemia, insulin resistance and regional increase of intra-abdominal fat even though the body mass indices were all normal or low, were observed. Metabolic disorders due to WS may complicate and cause NASH. Hence, the observed clinical association between WS and NASH suggests that patients with WS should also be screened for NASH.
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