Congenital portosystemic shunts associated with liver tumours.

Aim To evaluate the diagnosis and presentation of liver tumours in patients with congenital portosystemic shunts (CPS). Materials and methods Eight patients were diagnosed in Hopital Beaujon as having CPS. All patients underwent Doppler ultrasound, computed tomography (CT), magnetic resonance imaging (MRI), and histological examination of liver tumours. CPS were classified according to anatomy and the amount of portal flow deviated to the systemic circulation as: total, subtotal, or partial. Liver tumours were diagnosed by needle core biopsy ( n  = 5) or surgery ( n  = 3). Clinical follow-up was available in all patients but one (mean follow-up 36 months; range 1–5 years). Results Six patients had total CPS, one patient had a subtotal CPS, and the last had a partial CPS. All patients presented with multiple liver nodules (range four to >15). The tumours were characterized as focal nodular hyperplasia (FNH; n  = 4), FNH with hepatocellular adenoma ( n  = 2), and regenerative nodular hyperplasia ( n  = 2). In four of seven patients (57%) that had follow-up, tumours showed enlargement or new lesions appeared. Conclusion In this series of CPS patients, tumours were all benign, multiple, and of hepatocellular origin, and different tumours were present simultaneously in two patients. Tumour enlargement or new nodules were common during follow-up.