We report a Myceliophthora thermophila infection in a boy who underwent haematopoietic (cord blood) stem cell transplantation as treatment for relapsed acute myeloid leukaemia. Despite neutrophil engraftment and maximal supportive treatment, the child died of multi-organ failure. Infections with environmental moulds are rare, but potentially disastrous in immunocompromised patients. Rapid diagnosis and early treatment is of upmost importance.

(BELG J HEMATOL 2014;5(2):60–3)