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The pathology of meconium ileus equivalent
Abstract:
A case of meconium ileus equivalent in a 25-year-old woman with cystic fibrosis is reported and the pathology of this condition is described. On gross examination the lumen of the terminal ileum was completely obstructed by a mass of inspissated faecal material with a putty-like consistency. The principal microscopic findings were plugging of the mucosal crypts with mucoid secretion, distention of goblet cells and the presence of a thick layer of mucus, admixed with faecal material, adherent to the mucosal surface. Mucin histochemistry demonstrated sulphomucin in the terminal ileum, although acidic mucins in the normal small intestine are almost exclusively non-sulphated.
Insights
A case of meconium ileus equivalent in a 25-year-old woman with cystic fibrosis is described. The condition involves intestinal obstruction due to inspissated fecal material and abnormal mucin.
Area of Science:
- Gastroenterology
- Pathology
- Genetics
Background:
- Cystic fibrosis (CF) is a genetic disorder affecting multiple organs, including the gastrointestinal tract.
- Meconium ileus equivalent (MIE) is a less common complication of CF, presenting in older patients.
- Understanding MIE pathology is crucial for timely diagnosis and management in CF patients.
Observation:
- A 25-year-old woman with CF presented with symptoms of intestinal obstruction.
- Gross examination revealed a complete obstruction of the terminal ileum by inspissated fecal material.
- Microscopic analysis showed blocked mucosal crypts, distended goblet cells, and thickened mucus adherent to the intestinal surface.
Findings:
- Histochemical analysis identified sulphomucin in the terminal ileum of the patient.
- This contrasts with the typical non-sulphated acidic mucins found in the normal small intestine.
- The findings suggest altered mucin composition contributes to the pathophysiology of MIE in CF.
Implications:
- This case highlights the importance of considering MIE in adult CF patients with obstructive symptoms.
- The distinct mucin profile in MIE may offer targets for future therapeutic interventions.
- Further research into CF-related gastrointestinal mucin alterations is warranted.