Etiology

Excessive secretion of parathyroid hormone

Primary=may be due to hyperplasia or tumor of parathyroid glands

Secondary=caused by renal disease and vitamin D deficiency

Predilection

Usually adults

Location

Systemic disease

Clinical Appearance

Joint pain, stiffness, lethargy

Loosing of teeth

Radiographic Features

Well-circumscribed bone lesions, changes in trabeculation, partial loss of lamina dura

Treatment

Dependent upon cause

Diagnostic Process

Laboratory

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