Hirschsprung-associated congenital anomalies

Area of Science:

• Pediatric Surgery
• Clinical Genetics
• Developmental Biology

Background:

• Hirschsprung's disease (HD) is a congenital disorder characterized by the absence of ganglion cells in the distal bowel.
• Associated congenital anomalies (HACA) are frequently observed in HD patients, impacting prognosis and management.
• Understanding the spectrum and characteristics of HACA is crucial for comprehensive patient care.

Purpose of the Study:

• To investigate the prevalence and types of associated congenital anomalies in a cohort of Hirschsprung's disease patients.
• To analyze demographic and clinical parameters in HD patients with and without HACA.
• To explore potential genetic heterogeneity and origins of HACA in relation to HD.

Main Methods:

• Retrospective review of 302 patients diagnosed with Hirschsprung's disease between 1976-1993.
• Detailed data collection on associated anomalies, sex, gestational age, birth weight, aganglionic segment length, familial occurrence, and consanguinity.
• Statistical analysis to compare parameters between patients with and without HACA.

Main Results:

• 83 associated congenital anomalies were identified in 49 out of 302 HD patients.
• Central nervous system/special senses (28.92%) and genitourinary system (26.51%) were the most common anomaly systems.
• The female:male ratio was 1:4.2 overall and 1:6 in the HACA group; no significant differences in clinical parameters were found between HACA and non-HACA groups.

Conclusions:

• Hirschsprung's disease is frequently associated with congenital anomalies, particularly affecting the CNS, genitourinary, and skeletal systems.
• While HD may exhibit genetic heterogeneity, HACA does not appear to originate from a genetically distinct pathway.
• Further research into the genetic underpinnings of HACA in HD is warranted for improved diagnostic and therapeutic strategies.