Fig. 2. Current core needle biopsy technique. (A) The specimen notch shown in ultrasound should include the tumor tissue, tumor capsule, and adjacent normal parenchyma. (B) Histologic examination of the specimen shows the tumor tissue with a microfollicular growth pattern, tumor capsule, and surrounding thyroid tissue (H&E stain, ×40, upper; ×400, lower). This case should be diagnosed as a follicular neoplasm.