Cardiomiopathy and hypereosinophilia: a post-partum case. A case of cardiomyopathy and hyperoesinophilia observed soon after delivery is reported. A wide spectrum of different clinical entities characterized by peripheral hyperoesinophilia, tissue infiltration and eosinophil-mediated organ damage is referred to as hypereosinophilic syndrome and their distinction is often challenging. Cardiac involvement is frequent in such these syndromes and worsens prognosis. A prompt recognition and therapy of the underlying disease and of its peripheral expression, as in the following case, may improve patients' outcome.