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Rodanaki, Maria
Publications (3 of 3) Show all publications
Rodanaki, M., Lodefalk, M., Forssell, K., Arvidsson, C.-G., Forssberg, M. & Åman, J. (2019). The Incidence of Childhood Thyrotoxicosis Is Increasing in Both Girls and Boys in Sweden. Hormone Research in Paediatrics, 91(3), 195-202
Open this publication in new window or tab >>The Incidence of Childhood Thyrotoxicosis Is Increasing in Both Girls and Boys in Sweden
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2019 (English)In: Hormone Research in Paediatrics, ISSN 1663-2818, E-ISSN 1663-2826, Vol. 91, no 3, p. 195-202Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: We found an increase in the incidence rate (IR) of childhood thyrotoxicosis (CT) during the 1990s in central Sweden. The optimal treatment method for CT is a subject that is still debated upon.

OBJECTIVES: To investigate whether the increase in IR of CT in Sweden persists and to study the treatment outcome.

METHOD: Children <16 years of age diagnosed with CT during 2000-2009 and living in 1 of 5 counties in central Sweden were identified retrospectively using hospital registers. Data on clinical and biochemical characteristics and outcomes of treatment were collected from medical records. The corresponding data from 1990 to 1999 were pooled with the new data.

RESULTS: In total, 113 children were diagnosed with CT during 1990-2009 in the study area. The overall IR was 2.2/100,000 person-years (95% CI 1.2-2.5/100,000 person-years). The IR was significantly higher during 2000-2009 than during 1990-1999 (2.8/100,000 [2.2-3.6] vs. 1.6/100,000 person-years [1.2-2.2], p = 0.006). The increase was significant for both sexes. Seventy percent of the patients who completed the planned initial treatment with antithyroid drugs (ATDs) and were not lost to follow-up relapsed within 3 years. Boys tended to relapse earlier than girls (6.0 months after drug withdrawal [95% CI 1.9-10.0] vs. 12.0 months [95% CI 6.8-17.3], p = 0.074).

CONCLUSIONS: The IR of CT is increasing in both girls and boys. Relapse rate after withdrawal of ATD treatment is 70%. Boys tend to relapse earlier than girls, and this needs to be further investigated.

Place, publisher, year, edition, pages
S. Karger, 2019
Keywords
Children, Hyperthyroidism, Incidence rate, Relapse, Thyrotoxicosis
National Category
Pediatrics Endocrinology and Diabetes
Identifiers
urn:nbn:se:oru:diva-74317 (URN)10.1159/000500265 (DOI)000476517300005 ()31096231 (PubMedID)2-s2.0-85065962578 (Scopus ID)
Note

Funding Agency:

ALF funding at Region Örebro County, Sweden

Available from: 2019-05-20 Created: 2019-05-20 Last updated: 2019-11-13Bibliographically approved
Rodanaki, M., Lodefalk, M. & Åman, J. (2018). Incidence and Treatment Outcome of Childhood Thyrotoxicosis. Paper presented at 57th Annual Meeting of the European Society for Paediatric Endocrinology (ESPE 2018), Athens, Greece, September 27-29, 2018. Hormone Research in Paediatrics, 90(Suppl.1), 90-91, Article ID RFC5.3.
Open this publication in new window or tab >>Incidence and Treatment Outcome of Childhood Thyrotoxicosis
2018 (English)In: Hormone Research in Paediatrics, ISSN 1663-2818, E-ISSN 1663-2826, Vol. 90, no Suppl.1, p. 90-91, article id RFC5.3Article in journal, Meeting abstract (Refereed) Published
Abstract [en]

Aim: To study the incidence of childhood thyrotoxicosis in five counties in central Sweden during 1990–2009 and to study the treatment outcome.

Methods: Children below the age of 16 years diagnosed with thyrotoxicosis during the 20-years period and living in the study area were identified retrospectively. Data on the total number of children below 16 years of age living in the area during the study period was collected from the National Board of Statistics, Sweden. Data regarding clinical and biochemical characteristics and the outcome of the treatment were collected from medical records.

Results: 113 patients were identified. The annual incidence was 2.2/100,000 children during the whole study period. The incidence was higher during the last ten studied years as compared to the first ten studied years (2.8 vs. 1.6/100,000, p = 0.006). The increase in incidence was seen in both girls and boys (p = 0.041 and p = 0.038, respectively). Treatment with antithyroid drugs (ATD) was the first hand choice, but 69% of the patients relapsed within three years after the planned discontinuation of the ATD treatment. Boys relapsed more often than girls (p = 0.013), but we could not identify any other significant predictor for relapse.

Conclusion: Thyrotoxicosis is uncommon in pediatric patients but the incidence seems to be increasing. The outcome of the initial treatment with ATD is poor with high relapse rates. Boys seems to have an increased risk for relapse compared to girls. More studies are needed to identify an optimal treatment protocol for each individual.

Place, publisher, year, edition, pages
S. Karger, 2018
National Category
Pediatrics Endocrinology and Diabetes
Identifiers
urn:nbn:se:oru:diva-69441 (URN)000445204100176 ()
Conference
57th Annual Meeting of the European Society for Paediatric Endocrinology (ESPE 2018), Athens, Greece, September 27-29, 2018
Available from: 2018-10-09 Created: 2018-10-09 Last updated: 2018-10-16Bibliographically approved
Rodanaki, M., Rask, E. & Lodefalk, M. (2018). Incidence of Delayed Puberty in Adolescents: A Population-Based Study in a County in Central Sweden. Paper presented at 57th Annual Meeting of the European Society for Paediatric Endocrinology (ESPE 2018), Athens, Greece, September 27-29, 2018. Hormone Research in Paediatrics, 90(Suppl.1), 510-510, Article ID P2-P311.
Open this publication in new window or tab >>Incidence of Delayed Puberty in Adolescents: A Population-Based Study in a County in Central Sweden
2018 (English)In: Hormone Research in Paediatrics, ISSN 1663-2818, E-ISSN 1663-2826, Vol. 90, no Suppl.1, p. 510-510, article id P2-P311Article in journal, Meeting abstract (Refereed) Published
Abstract [en]

Introduction: Delayed puberty is defined as the absence of physical signs of puberty by the age of 14 years in boys and 13 years in girls. According to this definition, the prevalence of delayed puberty would be 2%, if the ages of pubertal onset were normally distributed in the population. However, the prevalence or incidence of delayed puberty has not been described before, as far as we know. Our aim was to study the incidence of delayed puberty in central Sweden.

Methods: In this population-based retrospective study all adolescents given the ICD-10 diagnosis “delayed puberty” in Örebro county during the period 2013-2015 were identified. Adolescents with other diagnoses potentially related to delayed puberty (e.g. short stature) were also identified to ensure that there were no additional cases. The medical records of these patients, except those not willing to participate, were systematically reviewed to ensure that the diagnosis was correct. The cases were then categorized into four groups depending on how accurate we found the diagnosis (certain, possible, wrong diagnosis, or unclear cases). Data on the total numbers of adolescents in Örebro county were obtained from the authority of statistics in Sweden.

Results: One hundred and twenty-eight of 180 eligible medical records were reviewed (response rate: 71 %). Nine boys and one girl were diagnosed with delayed puberty during the study time period and fulfilled our strict criteria for a certain diagnosis and 4 boys were classified as possible new cases. The total population in Örebro county for boys aged 14-18 years was on average 6,546 each year during the time period. The minimal annual incidence for boys was 46 per 100,000 (95% confidence interval (CI) 15-142 per 100,000). When possible cases were included, the annual incidence for boys increased to 66 (CI 26-170) per 100,000. Due to the low number of girls with delayed puberty no incidence for girls was calculated.

Discussion: This is, to our knowledge, the first study describing the incidence of delayed puberty in boys. We evaluated the accuracy of the diagnosis using strict criteria. The presented incidence should be regarded as the minimum incidence since some adolescents with delayed puberty may not seek medical advice or may be unrecognized by the health services in schools. Because of our small study population, larger studies are needed to confirm our findings and for calculation of the incidence in girls, where our data implies a much lower incidence.

Place, publisher, year, edition, pages
S. Karger, 2018
National Category
Pediatrics Endocrinology and Diabetes
Identifiers
urn:nbn:se:oru:diva-69442 (URN)000445204103277 ()
Conference
57th Annual Meeting of the European Society for Paediatric Endocrinology (ESPE 2018), Athens, Greece, September 27-29, 2018
Available from: 2018-10-09 Created: 2018-10-09 Last updated: 2018-10-17Bibliographically approved
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