[Familial case of Fahr's disease].

The article describes two cases of a rare disorder of potassium metabolism (intracerebral calcinosis, or Fahr's disease) in a 39-year-old male and his 60-year-old mother. It is noteworthy that the diagnosis of Fahr's disease was made during life on the basis of the clinical picture and CT findings. The patients presented changes in the calcium-phosphorus metabolism (a reduction in blood levels of calcium in the presence of unchanged concentrations of parathyroid hormones). The findings of X-ray radionuclide examination indicate the systemic nature of metabolic disturbances. The authors describe in detail the results of examination and consider the questions of the differential diagnosis, and some aspects of the pathogenesis of Fahr's disease.