title: ¹⁸F-FDG PET/CT and contrast enhanced CT in differential diagnosis between leiomyoma and gastrointestinal stromal tumor.
abstract: In a 49 years old woman a large abdominal tumor was diagnosed by abdominal ultrasound. Dynamic contrast-enhanced computed tomography (CECT) showed a large tumor with minute calcification and poor contrast enhancement in the left abdominal cavity. The fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography (¹⁸F-FDG PET/CT) scan showed low ¹⁸F-FDG uptake in the tumor. The SUV max (early image) was 1.90, and that of the delayed image was 2.86. A gastrointestinal stromal tumor (GIST) was suspected. Tumor resection revealed that it was a leiomyoma originating in the major curvature of the stomach. In conclusion, the findings of low ¹⁸F-FDG uptake on ¹⁸F-FDG PET and poor contrast enhancement on CECT in a gastric submucosal tumor suggested of a gastric leiomyoma rather than GIST.
authors.affiliation: Division of Nuclear Medicine, PET Center and Department of Radiology Kurume University School of Medicine, 67Asahi-Machi, Kurume, Fukuoka, 830-0011, Japan. yanbou@med.kurume-u.ac.jp.
authors.forename: Yasumitus
authors.initials: Y
authors.lastname: Hirose
authors.forename: Hayato
authors.initials: H
authors.lastname: Kaida
authors.forename: Akihiko
authors.initials: A
authors.lastname: Kawahara
authors.forename: Seiji
authors.initials: S
authors.lastname: Kurata
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Ishibashi
authors.forename: Toshi
authors.initials: T
authors.lastname: Abe
mesh_terms: D003287:Contrast Media; D003937:Diagnosis, Differential; D005260:Female; D019788:Fluorodeoxyglucose F18; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis*; D046152:Gastrointestinal Stromal Tumors / Q000175:diagnosis*; D006801:Humans; D007889:Leiomyoma / Q000175:diagnosis*; D008875:Middle Aged; D064847:Multimodal Imaging / Q000379:methods; D015588:Observer Variation; D049268:Positron-Emission Tomography / Q000379:methods*; D019275:Radiopharmaceuticals; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D003287:Contrast Media; D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18