Epstein‐Barr virus infection with acute acalculous cholecystitis in previously healthy children
2019
BACKGROUND: Acute acalculous cholecystitis (AAC), an inflammatory process of the gallbladder (GB) in the absence of gallstones, typically occurs in seriously ill patients. AAC can complicate primary Epstein-Barr virus (EBV) infection, but it is an atypical clinical presentation. AIM: The aim of our study was to analyse AAC occurrence in children with primary symptomatic EBV infection who had been admitted to the hospital. METHODS: We retrospectively evaluated the medical documentation of 181 children with EBV infection who were diagnosed based on the presence of viral capsid antigen IgM antibodies. All EBV-positive patients underwent transabdominal ultrasonography of the liver in the supine and right anterior oblique positions. Fifteen children who presented with AAC symptoms, including abdominal pain and a positive Murphy's sign, were analysed as a subsample and re-evaluated after 2-3 months. RESULTS: The incidence of AAC in children hospitalised with infectious mononucleosis (IM) was estimated at 8.3%. Analysis of the laboratory results confirmed that the C-reactive protein (CRP) concentration was the only parameter which was higher in children who presented with AAC symptoms. The mean number of leucocytes and monocytes and liver enzyme activities were not significantly higher. The radiological findings of AAC were evident: increased GB wall thickness, non-shadowing echogenic sludge and pericholecystic fluid collection. CONCLUSION: AAC during primary EBV infection appears to be a more common pathology than previously suspected. Its relatively mild nature and the lack of laboratory abnormalities mean that ultrasonographic examination is required for diagnosis. This might explain why the prevalence in children is underestimated.
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