Fig. 2

Representative photographs of hemorrhagic necrosis and cystic lesions (a). The relationship between PTG volume and histological changes, including nodular hyperplasia (b), hemorrhagic necrosis (c), and cystic lesions (d), in samples resected from patients with or without CH treatment. *P < 0.05 vs. PTG with each histological change, nodular hyperplasia (b), hemorrhagic necrosis (c), or cystic lesion (d), not treated with CH. ^# P < 0.05 vs. PTG with each histological change, nodular hyperplasia (b), hemorrhagic necrosis (c), or cystic lesion (d), treated with CH. PTG parathyroid gland, CH cinacalcet hydrochloride