Blar i Department of Clinical Medicine på forfatter "Sandvik, Oddvar Mathias"

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    • Aspirin as secondary prevention in colorectal cancer liver metastasis (ASAC trial): study protocol for a multicentre randomized placebo-controlled trial 

      Yaqub, Sheraz; Bjørnbeth, Bjørn Atle; Angelsen, Jon-Helge; Fristrup, Claus W.; Grønbech, Jon Erik; Hemmingsson, Oskar; Isaksson, Bengt; Juel, Ingebjørg Soterud; Larsen, Peter Nørgaard; Lindell, Gert; Mortensen, Frank V.; Mortensen, Kim Erlend; Rizell, Magnus; Sandström, Per; Sandvik, Oddvar Mathias; Sparrelid, Ernesto; Taflin, Helena; Taskén, Kjetil; Brudvik, Kristoffer Watten; Fretland, Åsmund Avdem; Horn, Arild; Kleive, Dyre; Labori, Knut Jørgen; Lassen, Kristoffer; Røsok, Bård Ingvald; Søreide, Jon Arne; Tholfsen, Tore; Villanger, Olaug; Waage, Anne (Journal article; Peer reviewed, 2021)
      Background Colorectal cancer is one the most common cancers in the western world with increasing incidence. Approximately 50% of the patients develop liver metastases. Resection of liver metastases is the treatment of ...

    • Epidemiology and classification of gastroenteropancreatic neuroendocrine neoplasms using current coding criteria 

      Sandvik, Oddvar Mathias; Søreide, Kjetil; Gudlaugsson, Einar; Kvaløy, Jan Terje; Søreide, Jon Arne (Peer reviewed; Journal article, 2016-02)
      Background: The lack of uniform criteria for coding of gastroenteropancreatic neuroendocrine neoplasia (GEP-NEN) has hampered previous epidemiological studies. The epidemiology of GEP-NEN was investigated in this study ...

    • Global epidemiology of gastrointestinal stromal tumours (GIST): A systematic review of population-based cohort studies 

      Søreide, Kjetil; Sandvik, Oddvar Mathias; Søreide, Jon Arne; Giljaca, Vanja; Jureckova, Andrea; Bulusu, V. Ramesh (Peer reviewed; Journal article, 2015-02)
      Background: Gastrointestinal stromal tumours (GISTs) are rare, yet the most common mesenchymal tumour within the digestive tract. Lack of diagnostic criteria and no specific code in the ICD system has prevented epidemiological ...

    • Improving pancreas surgery over time: Performance factors related to transition of care and patient volume 

      Søreide, Jon Arne; Sandvik, Oddvar Mathias; Søreide, Kjetil (Peer reviewed; Journal article, 2016-06-29)
      Background: Pancreas surgery has evolved with better diagnostic imaging, changing indications, and improved patient selection. Outside high-volume tertiary centers, the documented effect of evolution in care and volumes ...

    • Practice patterns in diagnostics, staging, and management strategies of gallbladder cancer among Nordic tertiary centers 

      Takala, Sini; Lassen, Kristoffer; Søreide, Kjetil; Sparrelid, Ernesto; Angelsen, Jon-Helge; Bringeland, Erling Audun; Eilard, Malin S.; Hemmingsson, Oskar; Isaksson, Bengt; Karjula, Heikki; Lammi, Jukka-Pekka; Larsen, Peter N.; Lavonius, Maija; Lindell, Gert; Mortensen, Frank V.; Mortensen, Kim Erlend; Nordin, Arno; Pless, Torsten; Sandström, Per; Sandvik, Oddvar Mathias; Vaalavuo, Yrjö; Villard, Christina; Sallinen, Ville (Journal article; Peer reviewed, 2023)
      Background and objective: Gallbladder cancer (GBC) is a rare malignancy in the Nordic countries and no common Nordic treatment guidelines exist. This study aimed to characterize the current diagnostic and treatment ...