Yonago Acta Medica
Online ISSN : 1346-8049
ISSN-L : 0513-5710
Patient Report
Natural History of Exophytic Type Gastrointestinal Stromal Tumor: A Case Report
Yasutaka AoeTakaaki SugiharaAyame OgawaRan NagaharaKenichi MiyoshiTomomitsu MatonoTakakazu NagaharaHajime IsomotoHirohiko KurodaYasuaki Hirooka
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2019 Volume 62 Issue 1 Pages 166-168


Gastrointestinal stromal tumor (GIST) is the most common submucosal tumor of the stomach. GISTs are often detected by esophagogastroduodenal endoscopy. We have previously reported on endoscopically invisible medium-sized exophytic type GISTs. We present here a case of small exophytic GIST detected by transabdominal ultrasonography (TUS) in which the natural history of the tumor could be traced retrospectively through incidental findings obtained during follow-up for intraductal papillary mucinous neoplasm by magnetic resonance of imaging or computed tomography over about 10 years. The tumor appeared 7 years before its detection, and the doubling time was calculated as 6.9 years. In conclusion, low-risk exophytic GIST was estimated to have taken at least about 7 years to reach a size detectable by TUS.

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© 2019 Tottori University Faculty of Medicine
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