Blar i St. Olavs hospital på forfatter "Qvigstad, Gunnar"
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Animal models to study the role of long-term hypergastrinemia in gastric carcinogenesis
Fossmark, Reidar; Qvigstad, Gunnar; Martinsen, Tom Christian; Hauso, Øyvind; Waldum, Helge (Journal article; Peer reviewed, 2011)Patients with chronic hypergastrinemia due to chronic atrophic gastritis or gastrinomas have an increased risk of developing gastric malignancy, and it has been questioned whether also patients with hypergastrinemia caused ... -
Do Gastric Signet Ring Cell Carcinomas and ECL‐Cell Neuroendocrine Tumours Have a Common Origin?
Fossmark, Reidar; Johannessen, Rune; Qvigstad, Gunnar; Mjønes, Patricia (Peer reviewed; Journal article, 2022)Gastric cancer is a heterogenous group of tumours, and a better understanding of the carcinogenesis and cellular origin of the various sub-types could affect prevention and future treatment. Gastric neuroendocrine tumours ... -
Gastric Cancers Missed at Upper Endoscopy in Central Norway 2007 to 2016—a Population-Based Study
Beck, Marianne; Bringeland, Erling A.; Qvigstad, Gunnar; Fossmark, Reidar (Peer reviewed; Journal article, 2021)Simple summary: Stomach cancer may be missed during upper endoscopy. We have examined how often this occurs and identified factors associated with missed cancers. Among 730 patients with gastric cancer, 67 (9.2%) were ... -
Macroscopic appearance of the major duodenal papilla influences bile duct cannulation: a prospective multicenter study by the Scandinavian Association for Digestive Endoscopy Study Group for ERCP
Haraldsson, Erik; Kylanpää, Leena; Grönroos, Juha; Saarela, Arto; Toth, Ervin; Qvigstad, Gunnar; Hult, Mari; Lindström, Outi; Laine, Simo; Karjula, Heikki; Hauge, Truls; Sadik, Riadh; Arnelo, Urban (Journal article, 2019)Background and Aims: Certain appearances of the major duodenal papilla have been claimed to make cannulation more difficult during ERCP. This study uses a validated classification of the endoscopic appearance of the major ...