High concentration of thyroglobulin antibodies (TgAb) is a major limiting factor of thyroglobulin measurements in patients with differentiated thyroid cancer. We investigated whether thyroglobulin antibody added to serum samples could interfere with the thyroglobulin assay. Thyroglobulin levels in serum samples with different concentrations of thyroglobulin were measured by electrochemiluminesc...

Introduction: Thyroglobulin (Tg) measurement is important for detection of disease recurrence in patients with differentiated thyroid carcinoma (DTC). However, its affected by Tg autoantibodies (TgAb). Calculation recovery may complement quantitative TgAb interference. This study aimed to determine the prevalence positivity samples received from post-thyroidectomy DTC Hospital Pulau Pinang (HPP...

Thyroglobulin is the major secretory protein of thyroid epithelial cells. Part of thyroglobulin reaches the circulation of vertebrates by transcytosis across the epithelial wall of thyroid follicles. Clearance of thyroglobulin from the circulation occurs within the liver via internalization of thyroglobulin by macrophages. Here we have analyzed the interaction of thyroglobulin with the cell sur...

To the Editor: High doses of iodine-131 (131I) are commonly used in patients with differentiated thyroid cancer (DTC) after total or subtotal thyroidectomy, in order to ablate the remaining cancer or normal thyroid tissue [1]. Whole body scan performed after about 5 days can visualize possible metastatic lesions [2] and may also show the stomach, salivary glands, the breasts expressing sodium i...

In some countries, in order to perform rhTSH-aided thyroid remnant ablation (TRA) after surgery, it is generally necessary to confirm that thyroidectomy has been almost complete. Otherwise, the nuclear medicine specialist will not administer a high radioiodine dose because it might be hazardous due to the possibility of thyroid remnant actinic thyroiditis. Considering this, it would be necessar...

A double antibody radioimmunoassay has been developed to measure thyroglobulin in rat (RTg) serum. The lowest detectable quantity measurable was 5.0 ng/ml. Specificity was documented by: (a) fall in serum RTg to undetectable levels after thyroid ablation; (b) the fact that L-thyroxine, D-thyroxine, L-triiodothyronine, D-triiodothyronine, triiodothyroacetic acid, tetraiodothyroacetic acid, triio...

AIM To investigate an "optimal" therapeutic management of patients with papillary thyroid microcarcinoma (PTMC). METHODS We evaluated a group of 403 consecutive patients affected by PTMC operated on by the same surgeon. Prognostic factors were evaluated by uni- and multivariate statistical analysis. RESULTS After a mean follow-up of 8.5 years, 372 patients were living without disease (undet...

The aim of this study was to evaluate the role of neck ultrasonography compared to (131)I whole-body scan (WBS) and circulating thyroglobulin (Tg) measurement after thyroid hormone withdrawal in the follow-up of children with thyroid papillary cancer, who had previously undergone total thyroidectomy for the diagnosis of neck lymph node metastases (LNM). Forty-five children were examined. Neck u...

The amplification of thyroglobulin (TG) mRNA in peripheral blood of patients with thyroid cancer has been studied for almost one decade, but its real contribution for diagnosis of cancer relapse has not yet been established. In the present paper we report the case of a patient with papillary thyroid cancer with undetectable stimulated serum thyrogobulin levels after thyroid ablation. Follow-up ...