title: Malignant lesions can mimic gastric uptake on FDG PET.
abstract: Gastric FDG uptake is a common observation on positron emission tomography (PET), which is most frequently caused by a nonmalignant etiology. However, a malignant lesion in the region of the stomach must not be overlooked. A 48-year-old woman with a history of melanoma in the esophagus and status postesophagectomy underwent FDG PET to evaluate for tumor recurrence. The images demonstrated hypermetabolism in the region of the location of the stomach. However, considering that the patient had a history of a stomach pullthrough procedure, we felt that this activity was nongastric and represented tumor recurrence, which was subsequently confirmed by computed tomography scan and histopathologic examination.
authors.affiliation: Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA 19104, USA.
authors.forename: Wichana
authors.initials: W
authors.lastname: Chamroonrat
authors.forename: Hongming
authors.initials: H
authors.lastname: Zhuang
authors.forename: Mohamed
authors.initials: M
authors.lastname: Houseni
authors.forename: Ayse
authors.initials: A
authors.lastname: Mavi
authors.forename: Ghassan
authors.initials: G
authors.lastname: El-Haddad
authors.forename: Chirdeep
authors.initials: C
authors.lastname: Bhutain
authors.forename: Abass
authors.initials: A
authors.lastname: Alavi
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging*; D005189:False Positive Reactions; D005260:Female; D019788:Fluorodeoxyglucose F18 / Q000493:pharmacokinetics; D005753:Gastric Mucosa / Q000378:metabolism; D006801:Humans; D008545:Melanoma / Q000000981:diagnostic imaging* / Q000378:metabolism / Q000556:secondary*; D009364:Neoplasm Recurrence, Local / Q000000981:diagnostic imaging* / Q000378:metabolism / Q000556:secondary*; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics; D013270:Stomach / Q000000981:diagnostic imaging; D013274:Stomach Neoplasms / Q000000981:diagnostic imaging* / Q000378:metabolism / Q000556:secondary*
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18