[Hereditary blood anomalies in the Abruzzi population in Valle del Sangro: from hematologic genetics to the history of a population].

A high incidence of hereditary blood anomalies (particularly Pelger-Huët's congenital granulocytic anomaly and Lepore haemoglobinopathy) is reported in the people of the Sangro Valley (Abruzzo, South Italy). The clinical, haematological, genetic and demographic implications of the high incidence of these pathologies are discussed.