Endocrine Abstracts

Background: Early detection of residual or recurrent cancer in patients with differentiated thyroid cancer (DTC) is important, especially, when they do not uptake 131I uptake because these tumors do not likely benefit from radioiodine therapy (RAIT). We aimed to evaluate the usefulness of FDG-PET/CT as an early diagnostic work up in DTC patients with negative radioiodine whole body scan (I-WBS) and elevated stimulated Tg (sTg) levels.Methods: ...

Background: Urinary metanephrine (MN) and normetanephrine (NMN) are used to detect recurrence of pheochromocytoma during post-operative period. Currently, reference ranges of urinary MN and NMN obtained from healthy individuals are applied to subjects with adrenalectomy. However, studies regarding the property of using reference ranges from healthy subjects in pheochromocytoma subjects with adrenalectomy are limited.Aim: To compare urinary MN and NMN con...

Background/aims: Maternal subclinical hypothyroidism has been reported to be associated with risks of adverse pregnancy outcomes such as fetal loss and possible fetal neurodevelopmental deficit. However, current guidelines seem to overestimate subclinical hypothyroidism in pregnant women in some regions. Therefore, we aim to evaluate trimester-specific reference range of serum TSH for pregnant women in Korea and whether maternal subclinical hypothyroidism affects perinatal out...