Nine cases comprising seven males and two females with mycetoma of the
cranium were studied between January 1990 and June 1997. Streptomyces
somaliensis was the most common causative organism. The source of the
infection was thought to be known in only three cases. The common mod
e of presentation was headache and scalp swelling. The next common pre
sentation was epilepsy. Other focal neurological disorders also occur.
CT scan findings of the cranium showed osteoscclerotic rather than os
teolytic changes.