Adynamic bowel syndrome. Report of a case with disturbance of the cholinergic innervation.

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Abstract
A case of adynamic bowel syndrome is described. Full thickness biopsies of the large bowel showed the presence of ganglion cells, no acetylcholinesterase positive nerves in the lamina propria, submucosa or among the smooth muscle cells of the circular and longitudinal muscle coats and absence of the argyrophil plexus. EM examination showed replacement of the normal axon bundle by vacuolated tracts with small round bodies in one area, probably viral. Neuronal cytoplasm showed similar vacuolation. The damage to the cholinergic innervation may be caused by a neurotoxic agent.