An unusual cause of persistent headache: chloroma (2008: 2b).

A chloroma (granulocytic sarcoma) is a rare tumour that is usually associated with leukaemia. The osseous skeleton is most commonly involved, and it confers a poorer prognosis for the underlying leukaemic disease. We present a case of a chloroma of the nasal sinuses that was the primary presentation of the patient's underlying leukaemia.