Unusual haematologic manifestations of Mycoplasma pneumoniae infection.

A 2-year-old male presented with fever, cervical lymphadenopathy, anaemia, neutrophilia and thrombocytosis. There was no evidence of pulmonary disease. Severe cold antibody (IgM) mediated haemolytic anaemia developed during admission. Infection with Mycoplasma pneumoniae was demonstrated, highlighting the extrapulmonary manifestations of the infection, in the absence of pulmonary signs.