FDG-PET/CT Manifestation of Tumor Seeding Along Percutaneous Biliary Drainage Catheter Tract.

A 55-year-old man with liver metastases from colon cancer developed obstructive jaundice secondary to bile duct compression from tumor burden, which required percutaneous biliary drainage until subsequent internal biliary stent could be placed. Follow-up FDG-PET/CT performed 2 months after removal of percutaneous biliary drainage catheter revealed FDG avid metastases along the catheter tract, extending from anterior abdominal wall to the peripheral liver at the insertion site of previous biliary catheter.