Hirschsprung's disease: Difference between revisions
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==Background== | ==Background== | ||
*Congenital aganglionosis of colon | *Congenital aganglionosis of colon | ||
*Usually affects rectosigmoid area | |||
**Short segment affects rectum and small amount of distal colon | |||
**Long segment affects more of colon, proximal intestine | |||
**Rarely involves more proximal intestine | **Rarely involves more proximal intestine | ||
*30% associated with a syndrome | *30% associated with a syndrome | ||
*1:5,000 live births | *1:5,000 live births | ||
==Clinical Features== | ==Clinical Features== | ||
*Delayed meconium passage after birth | *Delayed meconium passage after birth | ||
*80% present within first month of life | *80% present within first month of life | ||
**May have delayed presentation in milder disease | **May have delayed presentation in milder disease | ||
*Chronic constipation | *Chronic [[Constipation (peds)|constipation]] | ||
**Encopresis | **Encopresis | ||
**Rectal prolapse | **[[Rectal prolapse]] | ||
*Obstruction symptoms | *[[Small bowel obstruction|Obstruction]] symptoms | ||
**Neonatal toxic megacolon may occur | **Neonatal [[toxic megacolon]] may occur | ||
***Distended abdomen, bilious vomiting, enterocolitis | ***Distended abdomen, [[Nausea and vomiting (peds)|bilious vomiting]], enterocolitis | ||
*Enterocolitis | *Enterocolitis | ||
**Diarrhea, rectal bleeding, abdominal distention, fever | **[[Diarrhea (peds)|Diarrhea]], [[GI Bleeding (Peds)|rectal bleeding]], abdominal distention, [[fever]] | ||
==Differential Diagnosis== | ==Differential Diagnosis== | ||
{{Infant Constipation}} | |||
==Evaluation== | ==Evaluation== | ||
*KUB distended colon, empty rectum | *[[KUB]] distended colon, empty rectum | ||
**Enterocolitis: distention, bowel wall thickening | **Enterocolitis: distention, bowel wall thickening | ||
**Obstruction: air fluid levels | **Obstruction: air fluid levels | ||
*Barium/contrast enema will show narrowed colon and dilated intestine above | |||
**Sensitivity 70% and specificity of 83% | |||
*Diagnosis requires rectal biopsy (consult GI) | *Diagnosis requires rectal biopsy (consult GI) | ||
==Management== | ==Management== | ||
*Consult pediatric surgeon for operative management | *Consult pediatric surgeon for operative management | ||
*Treat enterocolitis with broad spectrum antibiotics | *ED management may include gastric and rectal decompression | ||
*Treat enterocolitis with broad spectrum [[antibiotics]] | |||
*Supportive fluid and electrolyte replacement | |||
==Disposition== | ==Disposition== | ||
*Admit if symptoms of obstruction, enterocolitis | *Admit if symptoms of obstruction, enterocolitis | ||
==See Also== | ==See Also== | ||
*[[Constipation (peds)]] | |||
==External Links== | ==External Links== | ||
==References== | ==References== | ||
<references/> | <references/> | ||
[[Category:Pediatrics]] | |||
[[Category:GI]] | |||
Revision as of 21:18, 29 September 2019
Background
- Congenital aganglionosis of colon
- Usually affects rectosigmoid area
- Short segment affects rectum and small amount of distal colon
- Long segment affects more of colon, proximal intestine
- Rarely involves more proximal intestine
- 30% associated with a syndrome
- 1:5,000 live births
Clinical Features
- Delayed meconium passage after birth
- 80% present within first month of life
- May have delayed presentation in milder disease
- Chronic constipation
- Encopresis
- Rectal prolapse
- Obstruction symptoms
- Neonatal toxic megacolon may occur
- Distended abdomen, bilious vomiting, enterocolitis
- Neonatal toxic megacolon may occur
- Enterocolitis
- Diarrhea, rectal bleeding, abdominal distention, fever
Differential Diagnosis
Infant Constipation
- Constipation
- Hirschsprung's disease
- Congenital anorectal malformations
- Imperforate anus
- Bowel obstruction
- Neurologic disorders
- Encephalopathy
- Spinal cord abnormalities: myelomeningocele, spina bifida, tethered cord
- Meconium ileus
- Metabolic causes
- Heavy-metal poisoning
- Medication side effects
Evaluation
- KUB distended colon, empty rectum
- Enterocolitis: distention, bowel wall thickening
- Obstruction: air fluid levels
- Barium/contrast enema will show narrowed colon and dilated intestine above
- Sensitivity 70% and specificity of 83%
- Diagnosis requires rectal biopsy (consult GI)
Management
- Consult pediatric surgeon for operative management
- ED management may include gastric and rectal decompression
- Treat enterocolitis with broad spectrum antibiotics
- Supportive fluid and electrolyte replacement
Disposition
- Admit if symptoms of obstruction, enterocolitis