Korean J Helicobacter Up Gastrointest Res.  2012 Sep;12(3):198-201. 10.7704/kjhugr.2012.12.3.198.

A Case of Duodenal Leiomyoma Showing False Positive Fluorine-18-fluorodeoxyglucose Positron-Emission Tomography

Affiliations
  • 1Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea. mhs1357@hanmail.net

Abstract

Duodenal leiomyomas are rare benign tumors of mesenchymal origin. Generally, Fluorodeoxyglucose (FDG)-PET would have a negative finding in leiomyomas. A 52-year-old man was referred to our hospital with melena. Gastroendoscopy revealed the presence of a huge submucosal tumor with ulceration at the duodenum bulb. Subsequent CT demonstrated a poorly enhanced oval mass adjoining the duodenal bulb. FDG-PET scan demonstrated an excessive accumulation of FDG in the lesion. A definitive diagnosis of duodenal leiomyoma was made on the basis of the pathologic finding of his surgical specimen. We report in this first case that duodenal leiomyma may show a potential pitfall of giving a positive FDG-PET result. Through this case, we would like to caution clinicians against PET-dependent evaluations of malignant potential of duodenal submucosal tumors.

Keyword

Duodenum; Leiomyoma; Positron emission tomography; False positive reactions

MeSH Terms

Duodenum
False Positive Reactions
Fluorodeoxyglucose F18
Humans
Leiomyoma
Melena
Middle Aged
Positron-Emission Tomography
Ulcer
Fluorodeoxyglucose F18
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