Microwave ablation (MWA) is a procedure where a microwave antenna is advanced directly into a tumor guided by CT or ultrasound imaging. The ablation antenna uses microwave energy to cause rapid rotation and agitation of water molecules to create friction and heat, which causes tumor cell death. Compared to other thermoablative devices, a couple advantages of microwave ablation is the ability to create a larger ablation zone in a shorter period of time. It can be used to treat primary and metastatic liver cancers, kidney and adrenal tumors, primary and secondary lung malignancies, and bone metastases. This procedure is helpful in relieving symptoms and extending survival. It has been shown to be an effective tool used in conjunction with other cancer therapies, such as chemotherapy, transarterial chemotherapy (TACE) and surgical resection.