eISSN: 1897-4317
ISSN: 1895-5770
Gastroenterology Review/Przegląd Gastroenterologiczny
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2/2019
vol. 14
 
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abstract:
Original paper

Pathogenesis of chronic constipation in a Polish group of paediatric patients – an attempt to create the optimal histopathological diagnostic protocol

Sylwia Szymańska
1
,
Malgorzata Markiewicz-Kijewska
2
,
Michal Pyzlak
3
,
Agnieszka Wieckowska-Karkucinska
1
,
Piotr Kalicinski
2
,
Wiesława Grajkowska
1
,
Maciej Pronicki
1

  1. Department of Pathology, The Children’s Memorial Health Institute, Warsaw, Poland
  2. Department of Surgery and Organ Transplantation, The Children’s Memorial Health Institute, Warsaw, Poland
  3. Department of General and Experimental Pathology, Medical University of Warsaw, Warsaw, Poland
Gastroenterology Rev 2019; 14 (2): 109–111
DOI: https://doi.org/10.5114/pg.2019.85894
Online publish date: 2019/07/05
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Introduction
Histopathological diagnosis of chronic constipation in children is difficult and time-consuming because the aetiology of the problem is heterogenous.

Aim
To create the optimal immunohistochemical (IHC) and histological diagnostic protocol using novel antibodies and assessing precisely their patterns.

Material and methods
Twenty-eight paediatric patients were enrolled to the study. The study group consisted of the following: 9 patients with confirmed Hirschsprung’s disease (HD), 11 patients with desmosis of the colon (DC) (3) or with chronic constipation of unknown aetiology (3), and eight children operated on due to other problems. Retrospective analysis of full-thickness material from the large intestine was performed. In each specimen the number of ganglion cells was estimated per square millimetre as well as the number of submucosal and intramuscular ganglion cells per ganglion. The following IHC and histological stains were also performed: calretinin, CD117, picrosirius, and trichrome gomori. Patterns (nuclear vs. cytoplasmic vs. membranous) and intensity (strong vs. faint) of the stainings were analysed.

Results
There was no statistically significant difference between groups while comparing the intensity and pattern of each staining, except HD (no staining due to lack of ganglion cells), p > 0.001. Calretinin was positive in each patient with ganglion cells; however, it did not unequivocally stain all cells identified in routine haematoxylin and eosin staining.

Conclusions
Calretinin is helpful in identifying ganglion cells; however, it cannot replace an experienced paediatric pathologist. In children with chronic constipation it is worth obtaining a full thickness intestinal biopsy in order to perform additional histological and immunohistochemical stains starting with picrosirius red.

keywords:

chronic constipation, aganglionosis, desmosis coli, children
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