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Diagnosis of Hirschsprung's Disease by Immunostaining Rectal Suction Biopsies for Calretinin, S100 Protein and Protein Gene Product 9.5
Published on: April 26, 2019
Allergic proctitis and abdominal distention mimicking Hirschsprung's disease in infants
Jee Hyun Lee1, Yon Ho Choe, Suk-Koo Lee
1Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Insights
Allergic proctitis (AP) can mimic Hirschsprung's disease (HD) in infants. Rectal suction biopsy is crucial for differentiating these conditions in infants with severe abdominal distention.
Area of Science:
- Pediatric Gastroenterology
- Surgical Neonatology
Background:
- Hirschsprung's disease (HD) is a congenital condition causing intestinal obstruction.
- Infants presenting with symptoms mimicking HD require accurate diagnosis to guide appropriate treatment.
- Allergic proctitis (AP) can present with similar clinical features to HD, complicating diagnosis.
Purpose of the Study:
- To investigate the incidence and clinical characteristics of allergic proctitis (AP) in infants suspected of having Hirschsprung's disease (HD).
- To evaluate the diagnostic utility of barium enema, anorectal manometry, and rectal suction biopsy in differentiating AP from HD.
Main Methods:
- A cohort of 105 infants under 6 months old, suspected of having HD, underwent barium enema, anorectal manometry, and rectal suction biopsy.
- Patient characteristics were compared between diagnosed HD, AP, and normal cases.
- Sensitivity and specificity of the diagnostic tests for HD were calculated.
Main Results:
- Of 105 infants, 37.1% were diagnosed with HD, 6.7% with AP, and 50.5% had normal findings.
- AP patients were older (mean 3.1 months) than HD patients (mean 1.4 months).
- Rectal suction biopsy demonstrated high sensitivity (97.4%) and specificity (100%) for diagnosing HD.
Conclusions:
- Allergic proctitis (AP) occurs with a notable incidence in infants presenting with symptoms suggestive of HD.
- AP should be considered in the differential diagnosis of infants with severe abdominal distention or HD-like findings.
- Rectal suction biopsy is a valuable tool for distinguishing between AP and HD in infants.
Aim:
To determine the incidence and clinical aspects of allergic proctitis (AP) in infants with symptoms that mimic Hirschsprung's disease (HD).
Methods:
One hundred and five patients less than 6 months of age, who underwent barium enema, anorectal manometry and rectal suction biopsy due to suspicion of HD, were enrolled. Comparison of the patient characteristics associated with each disease was based on the results of the triple testing. The sensitivity and specificity of the three tests, for the diagnosis of HD, were evaluated.
Results:
The mean age of enrolled patients was 2.1+/-0.9 months. Based on the three tests, 39 patients (37.1%) were diagnosed with HD, seven patients (6.7%) with AP, and 53 (50.5%) had normal results. Of the 54 patients with transitional zone and a reversed rectosigmoid index on the barium enema, four (7.4%) were patients with AP. The mean age of the AP patients (3.1+/-1.5 months old) was older than the HD children (1.4+/-0.9 months old). The sensitivity of the three tests for HD was 97.4%, 87.2% and 92.3% and the specificity was: 74.2%, 78.8% and 100%, respectively.
Conclusions:
In the infants with severe abdominal distention, the incidence of AP mimicking HD was relatively high. Therefore, consideration of AP should be part of the differential diagnosis in infants with severe abdominal distention or findings that mimic HD. For differentiation of these disorders, a rectal suction biopsy is very useful.
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