Fig. 1

Changes in the annual number of PTx procedures performed for SHPT in Showa University Northern Yokohama Hospital. Since the introduction of CH, the annual number of PTx procedures has decreased. CH has been clinically available since 2008 in Japan. After 2009, most patients were previously treated with CH before PTx. PTx parathyroidectomy, SHPT secondary hyperparathyroidism, CH cinacalcet hydrochloride