Document 2917 DOCN M94A2917 TI Stereotactic brain biopsy of focal intracerebral lesions in AIDS patients. DT 9412 AU Cosin J; Miralles P; Moreno S; Parras M; Salazar F; Bouza E; Infectious Diseases Unit, H.G. Maranon, Madrid, Spain. SO Int Conf AIDS. 1994 Aug 7-12;10(1):195 (abstract no. PB0207). Unique Identifier : AIDSLINE ICA10/94369658 AB OBJECTIVE: To determine the prevalence of different etiologies of intracerebral mass lesions unresponsive to empirical anti-toxoplasma therapy and to evaluate the efficacy and security of stereotactic brain biopsy. PATIENTS AND METHODS: During a period of 16 months, 23 cerebral stereotactic biopsies were performed to 21 patients with intracerebral masses. All patients had been treated against toxoplasma for at least 2 weeks with no clinical or radiologic response. Five patients showed multiple lesions on CT scan and 18 patients showed a solitary lesion. RESULTS: A definitive diagnosis could be established in all 21 patients but a second biopsy was necessary in 2 patients. Diagnosis included Non-Hodgkin's Lymphoma (12 cases), toxoplasmosis (6 cases), PML (2 cases), tuberculosis (1 case) and combined toxoplasmosis and tuberculosis (1 case). The results of brain biopsy significantly modified the management in all cases, and, in at least 11 patients, supposed a benefit for them. There were no deaths nor significant secondary effects after stereotactic biopsy. CONCLUSIONS: Stereotactic brain biopsy is safe and useful for the management of intracerebral mass lesions which do not respond to empirical antitoxoplasma treatment. DE Acquired Immunodeficiency Syndrome/COMPLICATIONS/*PATHOLOGY AIDS-Related Opportunistic Infections/DIAGNOSIS/*PATHOLOGY Biopsy/*METHODS Brain/*PATHOLOGY Encephalitis/DIAGNOSIS/PATHOLOGY Human Leukoencephalopathy, Progressive Multifocal/COMPLICATIONS/ DIAGNOSIS/*PATHOLOGY Lymphoma, AIDS-Related/DIAGNOSIS/*PATHOLOGY Prevalence *Stereotaxic Techniques Toxoplasmosis, Cerebral/DIAGNOSIS/*PATHOLOGY Tuberculoma/DIAGNOSIS/PATHOLOGY MEETING ABSTRACT SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).