Parathyroid carcinoma: Three case reports

Figure 2 Parathyroid adenocarcinoma of the lower right lobe of the thyroid gland in a 28-year-old woman. A: Doppler ultrasound revealed a solid nodule with small internal cystic foci; B: Color doppler flow imaging indicated multiple streaks of blood flow signals were observed in the solid part of the nodule; C: Parathyroid chief cells with neoplastic hyperplasia; some of the tumor cells were atypical, and the tumor capsule was of different thicknesses with focal capsule invasion.