| 2012, Volume 22, Number 2, Page(s) 246-249 |
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| Optochiasmatic Tuberculomas: A Vision-Threatening Paradoxical Response in Tuberculous Meningitis |
| Nisar A WANI1, Naseer KHAN1, Tasleem KOSAR1, Abdul QAYUM2 |
1Sher-I-Kashmir Institute of Medical Sciences (SKIMS), Department of Radiology, Srinagar, India 2Sher-I-Kashmir Institute of Medical Sciences (SKIMS), Department of Neurosurgery, Srinagar, India |
| Keywords: Optochiasmatic tuberculoma, Paradoxical response, Tuberculous meningitis, Tuberculoma, MRI |
| DOI: 10.5137/1019-5149.JTN.3279-10.2 |
The single main cause of death from infectious diseases worldwide is tuberculosis, which is more prevalent in developing countries.
Tuberculous meningitis (TBM) is a severe form of TB in which morbidity and mortality depend upon the stage of presentation. Intracranial
brain parenchymal tuberculomas may form paradoxically, days to months after starting antituberculous drug therapy. Tuberculomas may
develop in and around he optic chiasm and optic nerves after institution of antituberculous treatment as a quite rare occurrence in TBM;
this may lead to severe visual loss if not treated properly. We describe a 56-year-old man with documented TBM being treated with first line
antituberculous drugs who developed visual impairment 2 months after starting the treatment. MRI after gadolinium administration revealed
multiple perichiasmatic and a few parenchymal ring enhancing lesions due to tuberculomas. The patient was treated with corticosteroids and
antituberculous therapy was continued after which he recovered his vision gradually. Visual impairment developing in a patient on treatment
with antituberculous drugs should give rise to a suspicion of rare optochiasmatic tuberculomas; this necessitates urgent contrast-enhanced
MRI of the brain and prompt treatment with steroids.
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