Figure 6. Histopathology of the excised parathyroid gland; hematoxylin and eosin 100×. (A) Clear cells in the upper field and chief cells in the lower field forming acinar structures are shown. (B) Parathyroid adenoma tissue is shown on right side, normal parathyroid is pushed to the left, in between is fibrous capsule. (C) Nodule of oncocytic cells in the lower half with surrounding chief cells are shown. (D) Left lower corner are clear cells and right upper corner are chief cells surrounding ectactic blood vessels.