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[Age-dependent morphologic findings of the thyroid in sudden infant death]
1Institut für Rechtsmedizin, Universitätsklinikum Essen, Bundesrepublik Deutschland.
Insights
Thyroid glands in sudden infant death syndrome (SIDS) cases often show depleted colloid and signs of activation, especially after the first month of life. This differs from healthy infants, suggesting altered thyroid function in SIDS.
Area of Science:
- Pediatric Pathology
- Endocrinology
- Forensic Science
Context:
- Sudden infant death syndrome (SIDS) remains a significant concern in infant mortality.
- Understanding potential contributing factors, including organ-specific changes, is crucial for SIDS research.
- The thyroid gland's role in infant physiology and metabolism warrants investigation in SIDS cases.
Purpose:
- To correlate infant age and thyroid follicle colloid content in sudden infant death syndrome (SIDS) cases.
- To investigate the prevalence of thyroid gland activation and morphological changes in SIDS.
- To compare the histomorphological appearance of the thyroid in SIDS infants with healthy infants.
Summary:
- 176 thyroid investigations in SIDS cases (8 days to 12 months) revealed depleted colloid in 51% and partially depleted in 35%.
- Thyroid activation, indicated by epithelial desquamation and hyperemia, was observed in a significant percentage of SIDS cases, particularly after the first month.
- Normal thyroid morphology was found in only 14% of SIDS cases, contrasting with healthy infants where normal colloid content is expected.
Impact:
- Findings suggest altered thyroid gland activity in SIDS infants beyond the first month of life.
- Highlights the need for further research into the functional significance of these thyroid changes in SIDS.
- Provides histomorphological data that may aid in understanding physiological differences in SIDS.
Abstract:
Age (eight days to 12 months) and degree of colloid depletion or colloid content of the follicles (normal, partially depleted, depleted) were correlated on the basis of 176 thyroid investigations in cases of sudden infant death syndrome (SIDS). In the 176 SIDS cases, a resting thyroid gland with normal colloid content could only be found in 14%, whereas partially depleted follicles were found in 35% and depleted follicles in 51%. 60% of all cases showed a large degree of epithelial desquamation up to collapse of all follicles. A marked capillary hyperemia was found in 48%. 80% of the cases showed a normal colloid content in the first month of life, and colloidfree follicles should not be detected in any case. An increased incidence of thyroid activation was obtained in the total number of cases only from the second month of life. The histomorphological appearance of the thyroid gland thus corresponds to that of healthy infants only in the first month of life. The question as to why there is an evidently raised thyroid activity in the subsequent months of life in SIDS cases is discussed.