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1.
Allergol Int ; 63(2): 235-42, 2014 Jun.
Article in English | MEDLINE | ID: mdl-24662804

ABSTRACT

BACKGROUND: The skin prick test (SPT) for detecting atopic sensitization is not preferred in young infants with atopic dermatitis (AD) because of concerns about poor skin reactivity. This study aimed to evaluate whether the results of SPT agreed well with those of specific serum immunoglobulin E (sIgE) antibody test in young infants with AD. METHODS: This study included 2,077 eligible infants (age, <12 months) with AD who were tested by either SPT or sIgE between 2007 and 2011. Among them, 199 infants tested for egg white (EW) and 192 infants tested for cow's milk (CM), by both SPT and sIgE on the same day were identified and reviewed retrospectively. Kappa statistics and tests for equal kappa statistics were used to evaluate the agreement between the SPT and sIgE. RESULTS: The mean wheal diameter and the allergen-to-histamine ratio of SPT showed substantial agreement with those of sIgE for EW (κ = 0.62, 0.69) and CM (κ = 0.34, 0.47). The agreement for EW was significantly higher <6-month-old than in ≥6-month-old infants (κ = 0.79 vs. 0.54, P = 0.02), and that for CM was similar (P = 0.60). The mean wheal diameters for EW and CM were evenly distributed, and did not show increasing trends regardless of age in months (Ptrend = 0.13 and 0.06, respectively). CONCLUSIONS: The results of SPT agreed well with those of sIgE. This finding provides a rationale for using SPT, and suggests that SPT can be used along with sIgE to detect food sensitization in young infants with AD.


Subject(s)
Allergens/immunology , Dermatitis, Atopic/diagnosis , Dermatitis, Atopic/immunology , Egg White/adverse effects , Immunoglobulin E/immunology , Milk/adverse effects , Skin Tests , Animals , Antibody Specificity/immunology , Cattle , Egg Hypersensitivity/diagnosis , Egg Hypersensitivity/immunology , Female , Humans , Immunoglobulin E/blood , Infant , Infant, Newborn , Male , Milk Hypersensitivity/diagnosis , Milk Hypersensitivity/immunology , Reproducibility of Results , Retrospective Studies , Sensitivity and Specificity
2.
Korean J Pediatr ; 57(2): 85-90, 2014 Feb.
Article in English | MEDLINE | ID: mdl-24678333

ABSTRACT

PURPOSE: This study aimed to assess the characteristics of thyroid nodules among infants diagnosed with congenital hypothyroidism. METHODS: A retrospective study of 660 infants (374 males, 286 females) diagnosed with congenital hypothyroidism was carried out at the Pediatric Endocrine Clinic in Soonchunhyang University Hospital, Korea, between May 2003 and February 2013. The average age at diagnosis was 1.16±1.68 months. RESULTS: Of the 28 patients (4.2%) with thyroid nodules, 17 (2.6%) had cystic thyroid nodules and 11 (1.6%) had solid thyroid nodules. There were no significant differences in gender or age between congenital hypothyroidism patients who hadthyroid nodules and those who did not. All nodules were asymptomatic. The average age at diagnosis of congenital hypothyroidism with nodules was 1.42±1.39 months. All detected nodules measured less than 1 cm in diameter. Twenty-two of the 28 infants (78.6%) had only one nodule, while multiple nodules were found in 6 infants (21.4%). Of the 28 infants diagnosed with nodules, 16 underwent thyroid ultrasonography during follow-up and 8 of them (50%) showed no signs of nodules at thyroid ultrasonography. CONCLUSION: The prevalence of thyroid nodules in infants with congenital hypothyroidism was 4.2%. Most thyroid nodules were small in size and benign, disappearing during follow-up observation. We therefore conclude that thyroid nodules in infants with congenital hypothyroidism can simply be observed and do not require direct treatment.

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