Figure 1.

Transverse section of the spinal cord of a patient whose colon cancer pain was relieved by a limited midline myelotomy at T10. The section was taken at a level just rostral to the site of the lesion and was stained for myelin. A bilateral demyelinated area in the fasciculus gracilis is seen below the arrow. The drawing shows the demyelinated area in black. [Figure reproduced with permission from ref. 5 (Copyright 1996, International Association for the Study of Pain).]