[Case of Foster-Kennedy syndrome in the course of limited adhesive arachnoiditis].

A patient was observed with limited adhesive arachnitis of nontuberculous origin producing Foster-Kennedy syndrome. Ophthalmological, neurological and arteriographic investigations suggested unequivocally presence of a brain tumour. Limited non-tuberculous leptomeningitis is a very rare disease, difficult to diagnose and particularly difficult to differentiate against brain tumour. In the described case only intraoperative findings made possible the diagnosis.