Tuberculous spinal arachnoiditis and computerized tomographic myelography.

Tuberculous spinal arachnoiditis (TSA) is a serious condition and its early diagnosis is imperative. This communication is on 3 patients in whom the computerised tomography (CT) and water soluble myelographic appearance in TSA is highlighted. In twopatients, this was found to be superior in the diagnosis of TSA than plain myelography. On CT-myelography, TSA is characterised by a 'beaded' appearance and a denser concentration of the contrast medium in the ventral subarachnoid space.