MJ Fonseca, A Moreira, P Moreira, L Delgado, V Teixeira, P Padrão Faculty of Nutrition and Food Sciences, University of Porto, Porto, Portugal Department of Immunology, Faculty of Medicine, University of Porto, Porto, Portugal Department of Immunoallergology, Hospital of São João, Porto, Porto, Portugal Research Centre in Physical Activity, Health and Leisure, University of Porto, Porto, Portug...

Background and Aim: Alagille syndrome (AGS) is a rare multisystem genetic disorder of autosomal dominant inheritance classically characterized by intrahepatic bile duct paucity in conjunction with various combinations extrahepatic manifestations characteristic facial features. Apart from hepatic these patients are also at risk developing wide variety liver tumours including nodular hyperplasia ...

We report a case of a 18-year-old boy who presented with dyspnea and right upper quadrant abdominal dull pain. According to urgent echocardiography, a dense sessile mass occupied the right ventricule. Tumor resection was performed, followed by further adjuvant therapy. The specimen was histopathologically investigated and eventually diagnosed as metastatic adult hepatoblastoma. We discuss its c...

Hepatoblastoma is the most frequent primary liver tumor of childhood, with an annual incidence of 0.5-1.5 cases per million (1). It is very rare in adults, with a controversial existent since some authors believe that most of them are really underdiagnosed hepatocarcinomas, mixed sarcomas or hepatic cholangio-hepatocarcinomas. To date, there are only 40 reported cases of hepatoblastoma in adult...

Of 825 pediatric malignancies diagnosed at our institution between 2005 and 2012, 13 (1.6%) had primary liver tumors. The median age was 4 years (2 mo 15 yrs), 9 males. In 12 cases (92.3%), a malignant primary was present of which hepatoblastoma was the commonest, seen in 8(67%) cases. Hepatocellular carcinoma (HCC) was diagnosed in 3(25%) and undifferentiated embryonal sarcoma(UES) in 1(8%). M...

HB and HB+ are a shared secret-key authentication protocols designed for low-cost devices such as RFID tags. HB+ was proposed by Juels and Weis at Crypto 2005. The security of the protocols relies on the learning parity with noise (LPN) problem, which was proven to be NP-hard. The best known attack on LPN by Levieil and Fouque [13] requires subexponential number of samples and sub-exponential n...