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DOI: 10.1055/s-0043-1777101
Perioperative Histologically Controlled Fistula Resection in Patients with Imperforate Anus and Perineal Fistula
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Abstract
Introduction Postoperative constipation (PC) in patients with imperforate anus and perineal fistula (PF) has been reported in up to 60%. Histological studies of PF revealed innervation anomalies which seem to be one of the reasons for PC. Perioperative histologically controlled fistula resection (PHCFR) allows appropriate resection of PF and pull-down normoganglionic rectum at the time of posterior sagittal anorectoplasty (PSARP).
Materials and Methods A total of 665 patients with anorectal malformations underwent surgery between 1991 and 2021. Of these, 364 presented PF; 92 out of them (41 F) were studied. Patients with sacral and spinal cord anomalies, neurological disorders, and cut-back anoplasty were excluded. PSARP was done on all patients. Hematoxylin-eosin staining and NADH Tetrazolium-reductase histochemical method were used. Four and more ganglion cells in the myenteric plexus represented a sufficient length of the resection. The continence was scored according to the modified Krickenbeck scoring system. Final scores ranged from 1 to 7 points. Values are given as median.
Results A total of 65 (70.7%) patients presented an aganglionic segment in PF, and 27 patients presented hypoganglionosis. The median length of the resected fistula was 25 mm (interquartile range [IQR]: 20–30). The median total continence score was 7 (IQR: 6–7). Post-op constipation was observed in 6/92 (6.5%) patients.
Conclusion PHCFR diminished PC to 6.5% of patients.
Keywords
anorectal malformations - perineal fistula - posterior sagittal anorectoplasty - perioperative biopsy - chronic constipation - follow-upEthical Approval
This study received approval from the institutional ethical committee under No: EK – 646/22.
Publication History
Received: 22 February 2023
Accepted: 21 September 2023
Article published online:
28 November 2023
© 2023. Thieme. All rights reserved.
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