= excessive ingestion of vitamin D (large doses act like parathormone)

• loss of appetite, diarrhea, drowsiness, headaches
• polyuria, polydipsia, renal damage; convulsions
• excessive phosphaturia (parathormone decreases tubular absorption); hypercalcemia + hypercalciuria; anemia
• deossification
• widening of provisional zone of calcification
• cortical + trabecular thickening
• alternating bands of increased + decreased density near / in epiphysis (zone of provisional calcification)
• vertebra outlined by dense band of bone + adjacent radiolucent line within
• dense calvarium
• metastatic calcinosis in
  1. arterial walls (between age 20 and 30 years)
  2. kidneys = nephrocalcinosis
  3. periarticular tissue (puttylike)
  4. premature calcification of falx cerebri (most consistent sign!)