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Figure 2: Percutaneous ultrasound-guided radiofrequency ablation for giant desmoid tumors of the intra-abdominal cavity in a patient with Gardner syndrome. (a) The ultrasound scan before radiofrequency ablation showed that large and substantial tumors occupied the intra-abdominal cavity, the boundary of the tumors was unclear, and closely related to the mesentery; large blood vessels were seen at the bottom of the tumor. (b) Deployment approaches of multielectrode and multipoint were applied in each ablation procedure. For safety, prominent blood vessels were intentionally avoided when electrode deployments. (c) Contrast-enhanced ultrasound evaluation was performed after ablation, and the ablation area was contrast-agent-free, indicating that the tumor in the ablation area was inactivated

Figure 2: Percutaneous ultrasound-guided radiofrequency ablation for giant desmoid tumors of the intra-abdominal cavity in a patient with Gardner syndrome. (a) The ultrasound scan before radiofrequency ablation showed that large and substantial tumors occupied the intra-abdominal cavity, the boundary of the tumors was unclear, and closely related to the mesentery; large blood vessels were seen at the bottom of the tumor. (b) Deployment approaches of multielectrode and multipoint were applied in each ablation procedure. For safety, prominent blood vessels were intentionally avoided when electrode deployments. (c) Contrast-enhanced ultrasound evaluation was performed after ablation, and the ablation area was contrast-agent-free, indicating that the tumor in the ablation area was inactivated