4.6 Article

French national cohort of neuroendocrine cell hyperplasia of infancy (FRENCHI) study: diagnosis and initial management

Journal

EUROPEAN JOURNAL OF PEDIATRICS
Volume 181, Issue 8, Pages 3067-3073

Publisher

SPRINGER
DOI: 10.1007/s00431-022-04510-y

Keywords

Anti-inflammatory drugs; Childhood interstitial lung disease; Children; Clinical score; Cohort; Neuroendocrine cell hyperplasia of infancy

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The study aims to address the diagnosis and initial management of NEHI in pediatric centers for rare lung diseases. It found that NEHI diagnosis is often difficult and suggests the use of a composite clinical and radiological score to limit the use of anti-inflammatory drugs.
Early diagnosis of neuroendocrine cell hyperplasia of infancy (NEHI) is crucial as, conversely to the other causes of intersititial lung disease, corticosteroids are not recommended. Diagnosis is historically based on lung biopsy (NEHI), but in current practice, a clinical and radiological approach is more and more preferred (NEHI syndrome). This national study aimed to address diagnosis and initial management of patients followed up for a NEHI pattern in pediatric centers for rare lung diseases (RespiRare, France). Data on neonatal and familial events, symptoms at diagnosis, explorations performed and results, and therapeutic management were collected by questionnaire. Fifty-four children were included (boys 63%). The mean onset of symptoms was 3.8 +/- 2.6 months. The most frequent symptoms at diagnosis were tachypnea (100%), retraction (79.6%), crackles (66.7%), and hypoxemia (59.3%). The mean NEHI clinical score, evocative when >= 7/10, was 7.9 +/- 1.4 (76% with a score >= 7). All chest CT-scans showed ground glass opacities evolving at least the middle lobe and the lingula. Lung biopsy was performed in 38.9% of the cases and was typical of NEHI in only 52.4%, even when the clinical presentation was typical. Initial treatments were oxygen (83.6%) and more curiously intravenous pulses of steroids (83.3%) and azithromycin (70.2%). Conclusion: This national cohort of patients underlines diagnosis difficulties of NEHI. A composite clinical and radiological score should help clinicians for limiting the use of anti-inflammatory drugs.

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