Metastasis of malignant melanoma to common biliary duct demonstrated with F-18 FDG PET/CT

Clin Nucl Med. 2011 Jun;36(6):470-2. doi: 10.1097/RLU.0b013e31820ade2e.


Malignant melanoma is well known for its propensity to spread to unpredictable sites. F-18 FDG PET can highlight metastases at unusual sites that may be missed with conventional imaging modalities. In this study, we present the case of a 57-year-old male patient who was referred to our department for PET/CT imaging because of metabolic characterization of the lesion located in distal common biliary duct and biopsied as malignant melanoma. His PET/CT images revealed a hypermetabolic lesion at the mentioned site. Interestingly, his images also showed mild FDG accumulation on right frontoparietal skin, and the biopsy of this lesion was also reported as malignant melanoma.

Publication types

  • Case Reports

MeSH terms

  • Bile Duct Neoplasms / diagnosis*
  • Bile Duct Neoplasms / pathology
  • Bile Duct Neoplasms / physiopathology
  • Bile Duct Neoplasms / secondary*
  • Fluorodeoxyglucose F18*
  • Humans
  • Male
  • Melanoma / pathology*
  • Middle Aged
  • Positron-Emission Tomography*
  • Tomography, X-Ray Computed*


  • Fluorodeoxyglucose F18