title: Primary hyperthyroidism.
mesh_terms: D000236:Adenoma / Q000150:complications; D000368:Aged; D005260:Female; D006333:Heart Failure / Q000209:etiology; D006801:Humans; D006934:Hypercalcemia / Q000150:complications*; D006961:Hyperparathyroidism / Q000209:etiology*; D009206:Myocardium / Q000473:pathology*; D009336:Necrosis; D010282:Parathyroid Neoplasms / Q000150:complications