Damien Bouda, Presenter: Nothing to Disclose

Maxime Ronot MD, Abstract Co-Author: Nothing to Disclose

Matthieu Lagadec MD, Abstract Co-Author: Nothing to Disclose

Blanche Bapst, Abstract Co-Author: Nothing to Disclose

Mohamed Abdel-Rehim MD, Abstract Co-Author: Nothing to Disclose

Gaspard D'Assignies MD, Abstract Co-Author: Nothing to Disclose

Vincent Barrau MD, Abstract Co-Author: Nothing to Disclose

Valerie Vilgrain MD, Abstract Co-Author: Nothing to Disclose

1. To review the spectrum of early and delayed normal imaging findings after thermoablation of hepatic tumors 2. To know the main atypical presentations of ablation area, and to differentiate them from local tumoral progression or complications 3. To know the schedule and imaging modalities of the patients’ follow-up  

1. Normal aspect of ablation area: - Differences between RFA and MWA - Imaging features (CT, MRI, US, CEUS, CBCT, and PET-CT) - Immediate, early, and delayed aspects - Identification of complete ablation / residual tumor - Interest of diffusion-weighted images - Imaging follow-up 2. Atypical presentations: a – Ablation area: - Fatty tumors or scars - Presence of gas - Calcifications - Increase in size of the ablation area - Ghost lesion b – Adjacent liver modification: - Parenchymal retraction or atrophy - Infarction - Biliary and vascular modifications For each case, presentation of imaging features, clinical meaning, factors associated, and differentiation with main complications or local tumoral progression. 

http://abstract.rsna.org/uploads/2014/14012797/14012797_hw8w.pdf

Bouda, D, Ronot, M, Lagadec, M, Bapst, B, Abdel-Rehim, M, D'Assignies, G, Barrau, V, Vilgrain, V, Imaging of Liver Tumors Treated with Thermoablation: Atypical is not Always Pathologic!.  Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL. http://archive.rsna.org/2014/14012797.html