On biopsy, anaplastic thyroid cancer is characterized by trabecular or solid follicular tumor cells that invade the tumor capsule and surrounding vascular structures.
What does a biopsy for anaplastic thyroid cancer involve?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What does a biopsy for anaplastic thyroid cancer involve? [/INST] \n On biopsy, anaplastic thyroid cancer is characterized by trabecular or solid follicular tumor cells that invade the tumor capsule and surrounding vascular structures.</s>