Introduction: Tuberculosis (TB) has long been an important cause of destructive lesions of spine in India. However the scenario is fast changing with atypical presentations and increasing reports of non-tubercular conditions. This poses a great diagnostic dilemma.
Aim: The present study is aimed at evaluating the diagnostic efficacy of percutaneous transpedicular needle biopsy and the correlation of the histology with clinico-radiological features.
Methods: Forty-one patients diagnosed of TB spine by magnetic resonance imaging (MRI) were revaluated of their clinical presentations, radiological and MRI features and underwent transpedicular needle biopsy under fluoroscopic guidance. Quality of the sample and radiological/MRI features between the tubercular and non-tubercular lesions were studied.
Results: A good sample obtained in 92.7% patients. Of these 28 patients had TB, 3 non-specific inflammatory lesion and 7 with other non-tubercular conditions (3 pyogenic, 3 metastasis, 1 multiple myeloma). Statistically there is no significant difference among the TB and non-TB groups in terms of vertebral involvement and MRI features. However risk of presentation with cord compression, cord changes and neurodeficit are higher with TB spine.
Conclusion: It is very difficult to differentiate between tubercular and non-tubercular pathology of spine on the basis of most of the clinical and MRI features. It is more difficult in early cases without any neurodeficit. Thus histopathological confirmation is must for further management and percutaneous needle biopsy is the best option considering the simplicity and minimally invasive nature of the procedure.
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