title: PET-CT Post-Hepatic Radiation Changes in Gastroesophageal Adenocarcinoma.
abstract: Gastroesophageal junction adenocarcinoma on esophagogastroduodenoscopy biopsy. Initial PET-CT showed no definite evidence of distant metastatic disease. One month after radiation treatment, repeat PET-CT showed interval decrease in size of gastroesophageal mass but new multifocal FDG avidity in the caudate and left hepatic lobes. Correlation with contrast-enhanced CT and US images was negative, making metastasis less likely. Ultrasound-guided biopsy confirmed radiation-induced hepatitis, which caused false positively increased FDG uptake from inflammatory changes.
authors.affiliation: From the *Diagnostic Radiology, Allegheny General Hospital, Pittsburgh, PA; and †Diagnostic Radiology, Stony Brook University, Stony Brook, NY; ‡Family Medicine and §Radiation Oncology, Allegheny General Hospital, Pittsburgh, PA.
authors.forename: Don
authors.initials: D
authors.lastname: Nguyen
authors.forename: Rishi
authors.initials: R
authors.lastname: Maheshwary
authors.forename: Anuj
authors.initials: A
authors.lastname: Rajput
authors.forename: Cassie
authors.initials: C
authors.lastname: Tran
authors.forename: Vijay
authors.initials: V
authors.lastname: Kudithipudi
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging / Q000473:pathology / Q000532:radiotherapy*; D003937:Diagnosis, Differential; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000532:radiotherapy*; D004943:Esophagogastric Junction / Q000000981:diagnostic imaging / Q000473:pathology; D019788:Fluorodeoxyglucose F18; D006505:Hepatitis / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D006801:Humans; D061705:Image-Guided Biopsy; D000072078:Positron Emission Tomography Computed Tomography; D011832:Radiation Injuries / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D019275:Radiopharmaceuticals; D020266:Radiotherapy, Conformal / Q000009:adverse effects*; D013274:Stomach Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000532:radiotherapy*; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18