Computed tomography of the gastrointestinal manifestation of hereditary angioedema

Area of Science:

• Gastroenterology
• Immunology
• Radiology

Background:

• Hereditary angioedema (HAE) is a rare genetic disorder characterized by recurrent, unpredictable swelling episodes.
• Gastrointestinal (GI) involvement in HAE is uncommon but can mimic other abdominal pathologies.
• Early recognition of GI manifestations is crucial for timely diagnosis and management.

Observation:

• A case study detailing a patient with gastrointestinal symptoms suggestive of HAE.
• Computed tomography (CT) imaging revealed significant findings in the upper GI tract.
• Specific observations included gastric antrum, duodenal, and jejunal wall thickening.

Findings:

• CT scan demonstrated duodenal dilatation, thickened small bowel mesentery and omentum, and retroperitoneal edema.
• These findings, in conjunction with a relevant patient history, are key indicators.
• The case highlights the radiologic signs associated with HAE's GI presentation.

Implications:

• Emphasizes the need for clinicians to consider HAE in the differential diagnosis of unexplained abdominal conditions.
• Highlights the role of advanced imaging like CT in identifying subtle GI manifestations of HAE.
• Suggests that recognizing these CT findings can expedite diagnosis and improve patient outcomes for hereditary angioedema.