Variability of Microwave Ablation Volume Based on Clinical, Radiological, Biological, and Tissue Factors

This study analyzes factors that affect the size and shape of the destroyed tissue (ablation zone) during microwave ablation — a minimally invasive procedure that uses heat to destroy liver tumors — to improve planning and precision of the treatment. **You may be eligible if...** - You are an adult who has received microwave ablation for one or more liver lesions (tumors) - The procedure was done under CT or ultrasound guidance - You have follow-up imaging available **You may NOT be eligible if...** - You had multiple treatment cycles on the same tumor in a single session - You had repeat treatment on the same lesion - The planned treatment volume data is not available - There is no imaging done between 1 and 4 months after the procedure - The ablation zone cannot be measured on imaging (for example, due to artifacts) - There is no confirmed diagnosis of the tumor type Talk to your doctor to see if this trial is right for you.