Overview
Congenital pulmonary lymphatic dysplasia syndrome involves abnormalities in the development of lymphatic vessels within the lungs, leading to conditions such as pleural effusions, lung hypoplasia, and chronic lymphangiectasis. These defects can result from genetic mutations affecting key transcription factors like SOX18. 12Diagnosis
Key Diagnostic Criteria:
- Presence of pleural effusions in utero or neonatal period.
- Morphometric evidence of interlobular septal lymphatic hypoplasia.
- Lung hypoplasia or normal lung weight with associated congenital anomalies. 2
Recommended Tests:
- Postmortem lung examination for morphometric analysis.
- Histopathological evaluation for lymphangiectasia and connective tissue changes. 23Management
First-Line Treatments:
- Supportive care for respiratory insufficiency.
- Management of associated congenital anomalies (e.g., vascular ring). 2
Adjunctive Treatments:
- No specific pharmacological treatments mentioned; focus on symptomatic management. 123Special Populations
Pediatrics:
- Early recognition crucial due to potential fatal outcomes in neonates. 2
Comorbidities:
- Association with Turner's syndrome and persistent lymphoedema beyond infancy is rare but documented. 3Key Recommendations
Conduct postmortem morphometric analysis of lung tissue to identify interlobular septal lymphatic hypoplasia in cases of unexplained fetal pleural effusions. (Evidence: Moderate) 2
Histopathological examination should be considered in patients with persistent lymphoedema beyond infancy, especially in those with Turner's syndrome, to rule out congenital lymphangiectasis. (Evidence: Weak) 3
Focus on supportive care and management of associated congenital anomalies in neonates with suspected congenital pulmonary lymphatic dysplasia syndrome. (Evidence: Expert opinion) 2References
1 François M, Caprini A, Hosking B, Orsenigo F, Wilhelm D, Browne C et al.. Sox18 induces development of the lymphatic vasculature in mice. Nature 2008. link
2 Thibeault DW, Zalles C, Wickstrom E. Familial pulmonary lymphatic hypoplasia associated with fetal pleural effusions. The Journal of pediatrics 1995. link70043-9)
3 Perry HD, Cossari AJ. Chronic lymphangiectasis in Turner's syndrome. The British journal of ophthalmology 1986. link