Endocrine Abstracts

Background: CCH and serum hypercalcitoninemia (iperCT) can be found in benign thyroid diseases such as thyroiditis and in some cases of papillary (PTC) or follicular (FTC) thyroid microcarcinomas. The question of whether the association with these latter is related to the malignancy of the nodule is still unclear.Aim of the study: To evaluate the difference in the CCH prevalence, at histology, in a series of benign (BTN) and malignant (PTC/FTC) thyroid n...

Genetic intratumor heterogeneity has been recently demonstrated in some solid human cancers and a few years ago RET mutated and not mutated cells were described in medullary thyroid carcinoma (MTC). Nobody reported the presence of two different RET mutations.Aim of our study was to investigate the RET somatic mutation profile in primary MTC (pMTC) and in the corresponding metastatic tissues (mets).We studied pMTC and mets of 22 MTC...

Germline point mutations of the RET proto-oncogene are causative of hereditary MTC. Somatic mutations are described in 40% of sporadic MTCs. Although a relationship between somatic mutations and bad prognosis has been described, data are controversial.No date on the prognostic value of RET polymorphisms are available.Aim of the work was to verify if the presence of a somatic RET mutation and or a polymorphisms can influence the prognosis of MTC. This stu...

Objective: Currently, data about the molecular profile of multifocal papillary thyroid cancer (PTC) are still controversial. The aim of this study was to fully characterize by NGS the molecular profile of different histological variants in patients affected by multifocal PTCs.Methods: for this purpose, 12 multifocal PTC patients have been studied based to the following inclusion criteria: 1) a minimum of two tumors foci per patient with at least two diff...

BRAFV600E is the most common mutation in papillary thyroid carcinoma (PTC). Anatomo-patology and clinical features of PTC with BRAFV600E are well described in literature.Aim of this study was to examine the prognostic significance of BRAFV600E in patients with PTC and a follow-up of 15-20 years.Genomic DNA was purified from 67 paraffin-embedded tumoral tissue. A PCR-SSCP analysis of exon 15 of BRAF ...

Objectives: Anaplastic thyroid cancer (ATC) is one of the deadliest cancers, with a median overall survival (OS) of 4 months and a disease-specific mortality of ˜100%. Although to date no effective treatment can cure the disease, some anecdotal cases achieved longer survival and very rarely the cure of the disease. Multimodal treatment with surgery, radiotherapy, multikinase inhibitors (MKI) could improve survival in ATC, particularly when surgery is not feasible.<p c...

Sporadic medullary thyroid cancer (sMTC) presents mutations of the RET proto-oncogene in about 50% of the cases and of the RAS proto-oncogene in about 20% of the cases. In about 15% of cases, sMTC is multifocal and it is not known whether multiple foci can be considered as intrathyroidal metastases of the main tumor focus or if they can be considered as independent tumors. To clarify this issue, we examined the mutation profile of multiple intrathyroidal tumo...