Balo's Concentric Sclerosis Mimicking Cerebral Tuberculoma.

Balo's concentric sclerosis (BCS) is considered a rare variant of multiple sclerosis, which often mimics an intracranial neoplasm or abscess. We report the case of a 21-year-old woman presenting with BCS while undergoing treatment for pulmonary tuberculosis. Initial brain magnetic resonance imaging (MRI) findings were similar to those for cerebral tuberculoma, multiple metastases, or abscesses. However, the pathognomonic concentric sclerosis characteristic of BCS was seen on MRI. The antemortem confirmatory diagnosis of BCS was made by follow-up MRI and a brain biopsy. It is suggested that BCS should be included in the differential diagnosis of cerebral tuberculoma, especially in developing countries with a high prevalence of tuberculosis.