Quantitative morphometric analysis of the submucous plexus in age-related control groups

An increased number and density of the so-called giant ganglia (seven or greater ganglion cells per ganglion) serve as histopathological criteria for a bowel motility disorder called intestinal neuronal dysplasia of the submucous plexus (IND B). However, because these morphological criteria have been defined based upon observations in constipated patients, the diagnostic value of previous studies is open to controversy. Moreover, no age-related reference data from unaffected controls are available. This study reports on data from unaffected controls on the variability of size and distribution of ganglia in the submucous plexus during development. Therefore, for the first time, the normal status has been defined. Four age groups have been defined: (a) premature births, gestational age less than 35 weeks; (b) 1-365 days; (c) 1-14 years and (d) 15 years to greater than 70 years). All of these groups revealed giant ganglia in the submucous plexus. With advancing age, there was a decrease in the number of giant ganglia (from 32.7% in group a to 11.2% in group d) accompanied by an inverse increase in the mean distance between all ganglia (from 0.52 mm in group a to 1.17 mm in group d). The data presented permit the conclusion that the criteria mentioned above are not apt to define IND B as an entity, since they do not allow a sufficient demarcation from the age-correlated normal values presented here.