Case 104: Radiofrequency Ablation (RFA)

Diagnostic Category:

Clinical Presentation:

60 year old man with known HCC presents for surveillance after radiofrequency ablation (RFA).

CT: HCC, local tumor progression - extensive

Imaging Findings:

Multiphase CT reveals hypervascular recurrent hepatocellular carcinoma five months after radiofrequency ablation. The tumor is isodense on the delayed phase. Note the pseudocapsule surrounding the ablation zone. Recurrent tumor grows into and adjacent to the ablation zone. Follow up CT eight months later demonstrates significant tumor growth with multiple hypervascular satellite nodules and pseudocapsule formation around the tumor nodules. The final image shows the solitary hepatocellular carcinoma before ablation.