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A patient with congenital lipoid adrenal hyperplasia evaluated by serial abdominal ultrasonography
1Department of Paediatrics, Kansai Medical University, Moriguchi, Osaka, Japan.
Insights
Persistent adrenal enlargement in infants, detected via ultrasonography, suggests lipoid congenital adrenal hyperplasia (lipoid CAH). This finding is crucial for early diagnosis and management of this rare condition.
Area of Science:
- Pediatric Endocrinology
- Medical Imaging
- Genetics
Background:
- Congenital adrenal hyperplasia (CAH) encompasses several genetic disorders affecting adrenal hormone synthesis.
- Lipoid CAH is a rare, severe form characterized by massive lipid accumulation in the adrenals.
- Early diagnosis is vital for managing life-threatening adrenal insufficiency.
Observation:
- Serial ultrasonography tracked adrenal gland changes in an infant with lipoid CAH from 12 days to over 2 years of age.
- Adrenal enlargement was noted due to significant lipid and cholesterol deposition, damaging glandular structure.
- Unlike other CAH types, adrenal configuration persisted despite replacement therapy.
Findings:
- Persistent adrenal cortex enlargement, visualized through ultrasonography, is a key indicator of lipoid CAH.
- Massive lipid accumulation disrupts normal adrenal cyto-architecture in lipoid CAH.
- Adrenals eventually became undetectable by ultrasonography in this case.
Implications:
- Ultrasonographic findings of persistent adrenal enlargement post-therapy strongly suggest lipoid CAH.
- This imaging characteristic differentiates lipoid CAH from other forms, aiding diagnosis.
- Understanding these imaging patterns can improve diagnostic accuracy and patient outcomes for lipoid CAH.
Unlabelled:
Adrenal enlargement was followed by serial ultrasonography in an infant with congenital lipoid adrenal hyperplasia (lipoid CAH) from day 12 until 2 years and 4 months of age, when they were no longer detectable. Contrary to other types of CAH in which the configuration changes soon after replacement therapy, this infant with lipoid CAH showed persistent adrenal cortex enlargement due to massive accumulation of lipids and cholesterol resulting in a damaged glandular cyto-architecture.
Conclusion:
ultrasonographically persistent enlargement of the adrenals after replacement therapy is suggestive of the lipoid form of CAH.