Figure 4: Histopathology (Magnification-10X): A large tumor with sheets of clear, monomorphic cells without mitosis. Well encapsulated by fibro-collagenous tissue wherein, at the periphery of the capsule, compressed normal parathyroid could be identified. The compressed tissue is atrophic and is present in streaks/linear pattern. Outside this muscle and fibrous tissue and a part of thyroid could be identified