title: Gallbladder metastasis from malignant melanoma: diagnosis with FDG PET/CT.
abstract: Melanoma with metastasis to the gallbladder is sometimes seen on autopsy but is rarely seen in living patients, in part because it is often asymptomatic. A 67-year-old man with a history of malignant melanoma in situ underwent an F-18 FDG PET/CT scan, which showed a gallbladder focus (SUV 16.9). Four months later, on the repeat FDG PET/CT scan, a new lesion in the gallbladder was noted. Laparoscopic cholecystectomy was done and histopathologic findings were consistent with gallbladder metastasis of melanoma. PET/CT detects metastasis at unusual sites accurately and is helpful in correct staging and management of patients with melanoma.
authors.affiliation: Kettering Medical Center, Wright State University, Dayton, Ohio 45429, USA.
authors.forename: Bhavya
authors.initials: B
authors.lastname: Rehani
authors.forename: Pamela
authors.initials: P
authors.lastname: Strohmeyer
authors.forename: Martin
authors.initials: M
authors.lastname: Jacobs
authors.forename: Joseph
authors.initials: J
authors.lastname: Mantil
mesh_terms: D000368:Aged; D019788:Fluorodeoxyglucose F18; D005706:Gallbladder Neoplasms / Q000175:diagnosis* / Q000556:secondary*; D006801:Humans; D008297:Male; D008545:Melanoma / Q000175:diagnosis* / Q000556:secondary*; D049268:Positron-Emission Tomography / Q000379:methods*; D019275:Radiopharmaceuticals; D012878:Skin Neoplasms / Q000175:diagnosis*; D013382:Subtraction Technique; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18