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Also known as necrotizing enteropathy, ileocaecal syndrome and neutropaenic
enterocolitis
Epidemiology
Occurs in immunosuppressed patients:
- chemotherapy for leukaemia or solid tumours
- immunosuppression for transplantation
Pathogenesis
- unclear
- ? drug induced mucosal injury combined with inhibition of cellular
replication followed by superinfection with colonic organisms
- ? caecum particularly prone to involvement because of poor vascular
supply
Clinical features
- symptom onset usually occurs while white cell count declining
- nausea, vomiting
- abdominal pain
- ± diarrhoea (may be bloody)
- pyrexia
- right iliac fossa tenderness
- physical signs may be minimal, even in severe cases
- improvement usually delayed until white cell count begins to rise
Investigations
- AXR usually normal or non-specific:
- decreased gas in right lower quadrant with dilated small bowel loops
- free intraperitoneal gas (if perforation has occurred)
- "thumb printing
- ultrasound
- CT: terminal ileal, caecal and/or proximal colonic wall thickening
Management
Controversial
Conservative
- gastric decompression
- fluid and blood product replacement
- broad spectrum antibiotics
- ± parenteral nutrition
- close observation with repeat CT to monitor progress and detect
perforation
Surgery
- some advocate early surgical intervention
- definitive indications for surgery are:
- perforation
- generalized peritonitis
- continued bleeding despite correction of thrombocytopaenia and
coagulopathy
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