<prompt> Secondary hyperparathyroidism are seen in all except -RicketsOsteomalaciaOsteoporosisRenal failure  <response>: Primary -Singleadenoma90 Multipleadenomas4 Nodularhyperplasia5 Carcinoma1 Secondary -Chronicrenalfailure ,Malabsorption,Osteomalaciaand rickets Teiary DAVIDSONS PRINCIPLES AND PRACTICE OF MEDICINE 22ND EDITION PAGE NO-769 