抄録
This report summarizes data for 172 cases of chronic neutropenia in children in Japan. There are 29 cases of severe congenital neutropenia (Kostmann syndrome), five cases of cyclic neutropenia, 69 cases of auto-immune neutropenia, 39 cases of idiopathic neutropenia, 25 cases of chronic neutropenia that were not diagnosed as above 3 categories of chronic neutropenia and five cases of undiagnosed patients. For 26 cases of severe congenital neutropenia, stem cell transplantation was performed on 12 patients, and 12 of 12 cases are currently alive. Results from these patients suggest that stem cell transplantation is a beneficial treatment for severe congenital neutropenia patients.