Pathology Demineralization 1,25(OH)2D3 Osteomalacia a Ca P absorption I deformit Ca×Pl Parathyroid↑ calcium(±)&P↓Pathology Resume Ca 1,25(OH)2D3↓ Ca ＆ P absorption ↓ Parathiroid ↑ calcium (±) ＆ P ↓ Ca ×P↓ Demineralization Osteomalaci a deformity