Idiopathic Hypereosinophilic Syndrome. A Clinical Case
Idiopathic hypereosinophilic syndrome is a rare phenomenon in medical practice. The main criterion for diagnosis is a persistent increase in the level of eosinophils above 1.5 * 10<sup>9</sup>/ l in the blood serum and the absence of clinical and laboratory and instrumental data explaining the possible nature of this condition. A clinical case of idiopathic hypereosinophilic syndrome, which occurs under the guise of acute coronary syndrome, is presented. A detailed analysis of this case was carried out in order to highlight a possible variant of the course of this disease, as well as to increase alertness in the area of “large” eosinophilia.