Clinical and Experimental Pediatrics

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Original Article

Neonatology (Perinatology)

Association between base excess levels and clinical outcomes among very low birth weight infants: a multicenter birth cohort study in South Korea

Ji Yoo Kim, Hyeon Jin Kim, Heeyoon Choi, Minji Kim, Jinseok Lee, Yong Sung Choi, Dong Keon Yon

Clin Exp Pediatr. 2026;69(7):555-562. Published online May 21, 2026

Question: Is metabolic acidosis at birth in very low birth weight infants (VLBWIs) associated with long-term clinical outcomes?
Finding: Metabolic acidosis at birth was associated with increased mortality, adverse respiratory outcomes, neurological morbidities, and infection-related and gastrointestinal outcomes.
Meaning: VLBWIs with metabolic acidosis are at high risk of systemic complications. This finding emphasizes the need for close monitoring and comprehensive care.

DOI: https://doi.org/10.3345/cep.2025.02817

Clinical note

Immunology

Salivary and lacrimal gland enlargement with serum immunoglobulin G4 elevation

Jinseok Lee, Da-Eun Kim, Jeong-Hwan Yang, Misun Lim, Hye Yung Yum, JoongGon Kim

Clin Exp Pediatr. 2021;64(2):93-95. Published online December 8, 2020

Question: What diseases should be considered in a 15-year-old girl presenting enlarged lacrimal and salivary glands?
Finding: Laboratory tests revealed elevated IgG4 levels. A submandibular gland biopsy showed lymphoplasmacytic infiltration and more than 40 immunoglobulin G4 (IgG4)-positive cells per high-power field. The patient was diagnosed with IgG4-related disease.
Meaning: Although rare in children, IgG4-related disease should be considered a differential diagnosis in children with enlarged salivary and lacrimal glands.

DOI: https://doi.org/10.3345/cep.2020.01319

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