Parathyroid gland adenoma belongs to the benign tumor group and is the commonest originator of the primary hyperthyroidism which emerges owing to the both increased and uncontrolled secretion of parathyroid hormone due to the one or more parathyroid glands hyperfunction. The paper outlines the woman case, who was at the prison sentence enduring, and as a result of the supraventricular tachycardia and hemodynamic instability she was hospitalized at the Clinical centre, Kragujevac. The obduction diagnosed atherosclerosis of severe degree, left ventricle hypertrophy, nephrolithiasis, whereas the organs’ cut-outs pathohistological examination showed parathyroid gland adenoma. The cause of death of the particular patient was the myocardial infarction. Parathyroid adenoma of the patient was not detected in time because of the state of neglect and her way of life. The primary hyperthyroidism has significantly speeded up the myocardial damage and the blood vessel atherosclerotic changes.