All may be seen in hyperparathyroidism Except
Osteomalacia is the softening of the bones caused by impaired bone metabolism primarily due to inadequate levels of available phosphate, calcium, and vitamin D, or because of resorption of calcium. The impairment of bone metabolism causes inadequate bone mineralization . Its causes Ref - Pubmed.com
Solitary adenoma
Its malignant
Thyroid malignancy
Osteomalacia
Endocrinology