Gallbladder metastasis from malignant melanoma: diagnosis with FDG PET/CT.
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.
Rehani
Bhavya
B
Kettering Medical Center, Wright State University, Dayton, Ohio 45429, USA.
Strohmeyer
Pamela
P
Jacobs
Martin
M
Mantil
Joseph
J
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*
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18