Hyperparathyroidism presented as multiple pulmonary nodules in hemodialysis patient status post parathyroidectomy: A case report

Figure 3 Histology of the nodules. A: Hematoxylin and eosin (HE) stain, magnification 100 ×. Endocrine cells with blood are visible. Monotonous cells with round nuclei, occasional small nucleoli and eosinophilic cytoplasm arranged in follicular and landular patterns are apparent; B: HE stain, magnification 400 ×. Homogeneous nucleus and no obvious mitoses are shown; C: Parathyroid hormone immunostain, magnification 400 ×; D: Chromogranin A stain, magnification 400 ×.