Background: Liver involvement is a common manifestation of hereditary haemorrhagic telangiectasia (HHT). Although a number of studies have been carried out in adult patients, no study has ever been focused on investigating HHT-related hepatic involvement in paediatric patients. The present study aimed for the first time to systematically estimate the prevalence of HHT-associated liver involvement and to characterize HHT-associated hepatic angiodynamic features in paediatric age.
Patients And Methods: The study was designed as a cross-sectional survey in an HHT paediatric cohort, subclassified as HHT1 and HHT2 according to the mutated gene. The evaluation of the angiodynamic profile was performed by duplex ultrasound examination. Investigation by multi-slice computed tomography (MSCT) or magnetic resonance angiography (MRA) was performed in patients >12 years.
Results: MSCT/MRA examination disclosed silent hepatic involvement in 7/20 (35.0 %) children, and nodular regenerative hyperplasia in two cases. Diameter of common hepatic artery was significantly larger in HHT2 (0.45 ± 0.15 cm) compared to HHT1 (0.33 ± 0.09, p < 0.01) and control children (0.32 ± 0.08, p < 0.05). None of the patients had clinical manifestations of liver involvement. Angiodynamic profiles were different between paediatric and adult HHT patients.
Conclusions: Liver involvement can be detected in paediatric HHT patients, albeit with a lower frequency compared to adults. Paediatric HHT2 children show a higher frequency of liver involvement and a trend to hepatic artery dilation when compared to HHT1 children.
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