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Marine-Lenhart syndrome in two adolescents, including one with thyroid cancer: a case series and review of the literature.

Marine-Lenhart syndrome in two adolescents, including one with thyroid cancer: a case series and review of the literature.
Author Information (click to view)

Sharma A,


Sharma A, (click to view)

Sharma A,

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Journal of pediatric endocrinology & metabolism : JPEM 2017 11 11() doi 10.1515/jpem-2017-0223

Abstract
BACKGROUND
The coexistence of functional thyroid nodules and Graves’ disease (GD) is a rare condition known as Marine-Lenhart syndrome. Thyroid cancer has been described in several adults, but never in children, with Marine-Lenhart syndrome. This paper discusses the challenges in diagnosis and the unique management of this condition in children, in the context of extant literature.

CONTENT
In this case report, two adolescent female patients with Marine-Lenhart syndrome, aged 15 and 16 years, exhibited biochemical evidence of hyperthyroidism, and were found to have unilateral hyperfunctioning thyroid nodules via thyroid scintigraphy. Additionally, both patients showed elevated thyroid-stimulating immunoglobulins (TSI) and increased glandular activity, confirming background GD. Notably, one patient was also diagnosed with intranodular thyroid cancer upon preoperative examination. Both patients were treated via surgical resection. Summary and outlook: Diagnosis of Marine-Lenhart syndrome can be made in patients with functional thyroid nodules and increased glandular activity on thyroid scintigraphy. Standard doses of radioiodine ablation are not effective in the majority of patients and should be avoided due to the increased risk for thyroid cancer, making thyroidectomy the preferred treatment.

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