Classification of submucosal tumors in the gastrointestinal tract.
This review is part two of three, which will present an update on the classification of gastrointestinal submucosal tumors. Part one treats of the diagnosis and part three of the therapeutic methods regarding gastrointestinal submucosal tumors. In the past there has been some confusion as to the classification of gastrointestinal submucosal tumors. Changes in classifications have emerged due to recent advances in mainly immunohistochemistry and electron microscopy. The aim of this paper is to update the reader on the current classification. Literature searches were performed to find information related to classification of gastrointestinal submucosal tumors. Based on these searches the twelve most frequent submucosal tumor types were chosen for description of their classification. The factors that indicate whether tumors are benign or malignant are mainly size and number of mitotic counts. Gastrointestinal stromal tumors are defined mainly by their CD117 positivity. In the future, there should be no more confusion between gastrointestinal stromal tumors and other types of submucosal tumors.
Department of Surgical Gastroenterology K, Bispebjerg University Hospital of Copenhagen, Bispebjerg Bakke 23, 2400 NV Copenhagen, Denmark. laura@graves-ponsaing.dk
Laura-Graves
LG
Ponsaing
Katalin
K
Kiss
Mark-Berner
MB
Hansen
D018952:Antigens, CD34 / Q000032:analysis; D005753:Gastric Mucosa / Q000473:pathology; D005770:Gastrointestinal Neoplasms / Q000145:classification* / Q000473:pathology; D046152:Gastrointestinal Stromal Tumors / Q000145:classification / Q000473:pathology; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology; D019009:Proto-Oncogene Proteins c-kit / Q000032:analysis
D018952:Antigens, CD34; D019009:Proto-Oncogene Proteins c-kit