Spinal tuberculosis: atypical observations at MR imaging

Area of Science:

• Radiology
• Infectious Diseases
• Oncology

Background:

• Spinal tuberculosis diagnosis can be challenging.
• Magnetic resonance (MR) imaging is crucial for evaluating spinal pathologies.
• Differentiating spinal infections from neoplasms on MR imaging requires careful assessment.

Purpose of the Study:

• To evaluate atypical magnetic resonance (MR) imaging features of spinal tuberculosis.
• To highlight MR findings that may be mistaken for neoplasm.
• To emphasize the diagnostic challenges in spinal tuberculosis.

Main Methods:

• Retrospective review of MR imaging findings in 11 patients with spinal tuberculosis (1990-1993).
• Analysis of imaging characteristics including signal intensity on T1 and T2-weighted images and contrast enhancement.
• Comparison of atypical findings with typical features of spinal tuberculosis.

Main Results:

• Five of 11 patients exhibited MR findings suggestive of neoplasm rather than infection.
• Tuberculous lesions were hypointense on T1-weighted images and hyperintense on T2-weighted images, with contrast enhancement.
• Atypical presentations included isolated vertebral body involvement, single spinous process involvement, and sacral/lumbar vertebral involvement without disk space changes.

Conclusions:

• Neither clinical examination nor MR imaging findings alone are consistently reliable in differentiating spinal infections from neoplasms.
• Atypical MR imaging features of spinal tuberculosis can mimic neoplastic processes.
• Adequate biopsy remains essential for definitive diagnosis and prompt initiation of treatment for spinal tuberculosis.