Intracranial gumma mimicking a tuber cinereum tumor.

The brain magnetic resonance (MR) and computed tomography (CT) finding in a 37-year-old patient with a history of persistent headache and secondary hypogonadism and with a strongly positive blood and cerebrospinal fluid (CSF) fluorescent treponemal antibody-absorption (FTA-ABS) test is reported. A focal enhancing mass was demonstrated involving the tuber cinereum. The mass was markedly reduced after the completion of a course of intravenous administration of penicillin G treatment. This case is interesting because of its rare incidence and unique neuroradiological findings.