Atypical tuberculosis of the spine.

Spinal tuberculosis characteristically involves the paradiscal area of vertebral bodies with a narrowing of the disc space. In this study, we reported four atypical forms of Pott's disease, including one hundred and eighty-four patients treated between 1985 and 1998. Two cases presented with noncontiguous multilevel involvement, where one case had transverse process involvement alone and the other had involvement of the neural arch. Atypical tuberculosis of the spine was found in 2.1% of the patients.