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Congenital microvillus atrophy in a 4-month-old girl
1Department of Pediatric Gastroenterology, Marmara University Faculty of Medicine, Istanbul.
Insights
Congenital microvillus atrophy is a rare infant enteropathy causing intractable diarrhea. Diagnosis requires electron microscopy, and bowel transplantation is a potential treatment option.
Area of Science:
- Gastroenterology
- Pediatrics
- Pathology
Background:
- Congenital microvillus atrophy (CMA) is a rare, severe enteropathy characterized by intestinal brush border abnormalities.
- It presents as intractable diarrhea in infancy, necessitating differentiation from other diarrheal disorders.
- CMA is an emerging clinicopathological entity requiring specific diagnostic considerations.
Observation:
- A four-month-old female infant presented with chronic, intractable diarrhea since birth.
- Diagnostic challenges were encountered in identifying the underlying cause of the severe diarrhea.
- Electron microscopic examination of small intestinal mucosa was crucial for diagnosis.
Findings:
- The electron microscopy revealed characteristic ultrastructural abnormalities of the intestinal brush border, confirming CMA.
- The case highlights the diagnostic utility of electron microscopy in identifying rare enteropathies.
- Congenital microvillus atrophy is an autosomal recessively inherited disorder.
Implications:
- Early and accurate diagnosis of CMA is essential for appropriate management.
- Bowel transplantation is emerging as a viable therapeutic option for severe cases of CMA.
- Considering CMA in the differential diagnosis of intractable infantile diarrhea is critical for timely intervention.
Abstract:
Congenital microvillus atrophy is a severe generalized enteropathy with ultrastructural abnormalities of the intestinal brush border. It is a rather new clinicopathological entity which needs to be differentiated from other enteropathies within the spectrum of intractable diarrhea of infancy. The presented case was a four-month-old girl with a chronic, intractable diarrhea, beginning at birth. The diagnosis was established only after the electron microscopic examination of small intestinal mucosa which revealed the characteristic features of the disease. Congenital microvillus atrophy is a rare autosomal recessively inherited disorder and bowel transplantation becomes a realistic option of treatment. Therefore, it should be specifically considered in the differential diagnosis of chronic intractable diarrhea of infancy.