An unusual presentation of gross cerebral vascular dilatation in a TB/HIV co-infected individual.

Aneurysmal dilatation secondary to HIV vasculitis is well described being more common in patients under 45 years of age with advanced stage HIV infection (CD4 < 200 cells/µl). Tuberculous meningitis is far more common than previously anticipated with centres in Cape Town publishing that more than half of all cases of adult meningitis were secondary to tuberculosis. But aneurysmal dilatation of the cerebral vessels is exceedingly rare complication in this population.