Recurrent subdural haematoma as the primary and sole manifestation of chronic lymphocytic leukaemia.

An 81-year-old man with a recurrent subdural haematoma as the first and only manifestation of chronic lymphocytic leukaemia (CLL) is described. Microscopic examination of the encapsulated haematoma showed leukaemic infiltration and the diagnosis was confirmed by bone marrow aspiration and by pathological examination of the brain at autopsy.