Icons in paediatrics: Rolf Kostmann (1909-1982).

The article reports on the late Swedish paediatrician Rolf Kostmann. It offers information about his contribution as physician to the country and to other Swedish medical researchers, his passion as paediatrician as well as his occupational achievement. Also emphasized is Kostmann's report on infantile hereditary agranulocytis depicting severe chronic neutropenia as genetic disease.