case_images: PMC10859429_01
case_images: Family tree. Square - male, circle - female; arrow - the proband.
case_images: fendo-15-1330185-g001.jpg
case_images: PMC10859429_01_fendo-15-1330185-g001.jpg
case_images: f1
case_images: Family history ( Table 1 ,  Figure 1 ): The patient's father and sister both had parathyroid-related diseases.
case_images: Imaging studies in the proband. (A) Parathyroid ultrasound: Dorsal aspect of the inferior pole of the suitable lobe: 3.1x2.4x1.9 cm. (B) Neck CT enhancement: Dorsal aspect of the inferior pole of the right lobe: Parathyroid origin? (C) Parathyroid ECT (99TcmO4 MIBI): Right inferior parathyroid hyperfunctioning lesion: 2.2x2.3x2.9 cm.
case_images: fendo-15-1330185-g002.jpg
case_images: PMC10859429_01_fendo-15-1330185-g002.jpg
case_images: f2
case_images: Imaging studies ( Figure 2 ), comprising parathyroid ultrasound, parathyroid ECT, and neck CT, identified a mass in the right inferior parathyroid gland.
case_images: Parathyroid histopathology in the proband. (A-D) in order of 20x (40x in the lower right corner) HE, PTH, CgA, Ki-67 index staining.
case_images: fendo-15-1330185-g003.jpg
case_images: PMC10859429_01_fendo-15-1330185-g003.jpg
case_images: f3
case_images: Immunohistochemistry ( Figure 3 ) revealed staining for PTH (+), CgA partial (+), CD vascular (+), Syn (-), and TTF-1 (-), with a Ki-67 index of approximately 8%.