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    J Med Screen. 2003;10(1):2-4.

    False-negative primary neonatal thyroid screening: the need for clinical vigilance and secondary screening.

    Source

    Department of Pediatrics, Daher, American University of Beirut, Beirut, Lebanon. kayunis@aub.edu.lb

    Abstract

    The screening of newborn babies for congenital hypothyroidism has changed the natural history of this abnormality. We describe here a case of a female patient with congenital hypothyroidism that was missed by primary neonatal thyroid screening (using thyroid-stimulating hormone) at two days of age; it was detected only after the development and persistence of jaundice during the first three weeks of life. A normal neonatal screening result does not preclude the development of hypothyroidism later in infancy. Clinical vigilance must be maintained by practitioners. A second screening between two and six weeks of age may be useful in order to detect the few cases missed at first screening.

    PMID:
    12790307
    [PubMed - indexed for MEDLINE]

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