Figure 4: (a and b) Ultrasound evaluation of the neck revealed the presence 10.4103/aam.aam_11_19 of well-defined nodular lesion measuring 2 cm × 1.4 cm × 1.4 cm in the expected location of left parathyroid gland with increased internal vascularity. (c) Abdominal ultrasound examination showing hydronephrosis with renal calculus