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Isolated brainstem tuberculomas

  • Original Article - Brain Tumors
  • Published:
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Abstract

Background

Isolated brainstem tuberculomas are rare lesions and account for up to 5% of all intracranial tuberculomas in endemic areas. The difficulties in diagnosis and management of this condition are sparsely reported. The aim of this study is to illustrate the nuances in managing brainstem tuberculomas, define prognosis, and demonstrate a shift in management strategies with newer imaging modalities.

Method

A retrospective review of 14 patients diagnosed and treated with a diagnosis of ‘isolated brainstem tuberculoma’ between 2011 and 2015 was done. Diagnosis was made after combining the findings at clinical history, examination, as well as imaging features. Patients were treated with steroids for 6 weeks or until they made a meaningful clinical recovery, and antitubercular therapy (ATT) for a minimum of 18 months or until there was resolution of the tuberculoma. Confirmation of tubercular pathology was done by observing if response to treatment resulted in clinical improvement, which happened in all of our cases.

Results

Mean age at diagnosis was 24.7 years and nine were males. Twelve patients had a combination of cranial nerve deficits with pyramidal weakness or sensory symptoms. Mean duration of symptoms was 4.7 months and tests for human immunodeficiency virus (HIV) infection were negative in all patients. Only two patients had a previous history of tubercular meningitis. Most lesions were located in the pons with size ranging from 1 to 22.2 cm3. Eight patients showed complete resolution of the lesion at latest follow-up and the rest were still on ATT. Mean duration of ATT received for resolution of the lesion was 22 months. Almost all of our patients improved clinically on steroids and ATT.

Conclusions

Intracranial tuberculomas may present with or without meningitis. A high index of suspicion is essential, especially in endemic areas. A combination of clinical symptoms, investigations, and imaging features help in coming to a diagnosis. Biopsy of a brainstem lesion is fraught with complications. Antitubercular therapy has a very good prognosis, though the duration of therapy required may be longer.

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Authors and Affiliations

  1. Department of Neurosurgery, National Institute of Mental Health and Neurosciences, 2nd Floor, Neurosciences Faculty Building, Bangalore, 560029, India

    Nishanth Sadashiva, Dhaval Shukla, Dhananjaya Bhat, Sampath Somanna & Bhagavatula Indira Devi

  2. Department of Neuroimaging & Interventional Radiology, National Institute of Mental Health and Neurosciences, Bangalore, India

    Sarbesh Tiwari & Jitender Saini

Authors
  1. Nishanth Sadashiva
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  2. Sarbesh Tiwari
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  3. Dhaval Shukla
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  4. Dhananjaya Bhat
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  7. Bhagavatula Indira Devi
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Correspondence to Bhagavatula Indira Devi.

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Informed consent was obtained from all individual participants included in the study.

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Sadashiva, N., Tiwari, S., Shukla, D. et al. Isolated brainstem tuberculomas. Acta Neurochir 159, 889–897 (2017). https://doi.org/10.1007/s00701-017-3108-1

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