Needle tract implantation after percutaneous interventional procedures in hepatocellular carcinomas: lessons learned from a 10-year experience.
Percutaneous interventional procedures under image guidance, such as biopsy, ethanol injection therapy, and radiofrequency ablation play important roles in the management of hepatocellular carcinomas. Although uncommon, the procedures may result in tumor implantation along the needle tract, which is a major delayed complication. Implanted tumors usually appear as one or a few, round or oval-shaped, enhancing nodules along the needle tract on CT, from the intraperitoneum through the intercostal or abdominal muscles to the subcutaneous or cutaneous tissues. Radiologists should understand the mechanisms and risk factors of needle tract implantation, minimize this complication, and also pay attention to the presence of implanted tumors along the needle tract during follow-up.
Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Samuel
S
Chang
Seong Hyun
SH
Kim
Hyo K
HK
Lim
Seung Hoon
SH
Kim
Won Jae
WJ
Lee
Dongil
D
Choi
Young Sun
YS
Kim
Hyunchul
H
Rhim
D000368:Aged; D000369:Aged, 80 and over; D001707:Biopsy, Needle / Q000009:adverse effects; D006528:Carcinoma, Hepatocellular; D017115:Catheter Ablation / Q000009:adverse effects; D000431:Ethanol / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007267:Injections; D008113:Liver Neoplasms / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009366:Neoplasm Seeding; D014057:Tomography, X-Ray Computed
D000431:Ethanol