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- W2481796262 abstract "Genetically caused medullary thyroid cancer (MTC) is associated with unfavorable survival prognosis, so it makes necessary to develop new diagnostic techniques to reveal pre-clinical stage of disease as well as to introduce into clinical practice the effective method of tumor prevention. The article represents first in Russia summary clinical experience of prophylactic thyroidectomy have been executed in the period 1998 – 2015 yeas among ten bearers of RET gene germlinemutation in families with hereditary disease including syndrome MEN2A and familial MTC. Aim : to evaluate the results of surgical treatment of asymptomatic carriers of germinal mutations in the RET gene. Materials and methods . In the period from 1998 to 2015, in two centers: N.N. Blokhin Russian Cancer Research Center, Moscow and A. Tsyb Medical Radiological Research Centre – branch of the National Medical Research Radiological Centre, Obninsk was conducted prophylactic surgical treatment in 10 patients – asymptomatic carriers of germinal mutations in RET. Age of patients – from 2 to 23 years old. 9 patients – from families with the syndrome of multiple endocrineneoplasia type 2A (MEN2A), one – with the family of MTC. According to genealogy in 9 families of patients there have been cases of death from MTC or pheochromocytoma (PC). In all cases, surgical treatment was performed in a volume of TE, two patients additionally performed lymph node dissection VI level. The observation period after surgery ranged from 6 months to 16 years. Results . DNA diagnostics in 8 patients identified a mutation in exon 11, in one case – in exon 10 and one patient had revealed two mutations in exons 13 and 14. The age of patients ranged from 2 to 23 years. Basal calcitonin level was elevated in 7 of 10 patients. Such prophylactic TE in 2 patients was supplemented by selective lymph node dissection. Histological examination of the removal of the thyroid gland (TG) revealed foci of medullary cancer in 6 of 10. At 2 patients revealed a C-cell hyperplasia and at 2 patients were found signs of the well expressed and weakly expressed sclerosis in thyroid tissue. The earliest age to identify MTC was a child 3 years old, mutations in codon 634, from a family where relatives observed for aggressive MTC. In the course of follow-recurrence was detected in one patient, a child of 15 years, a similar mutation carrier. Conclusion . In view of the risk of MTC developing identifying a mutation in RET gene and preventive TE should be carried out as soon as possible. The high risk of MTC developing in RET-gene positive subjects was confirmed in this study (6 cases of cancer from 10 patients)." @default.
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- W2481796262 date "2016-05-12" @default.
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- W2481796262 title "Prophylactic thyroidectomy results among RET germline mutation bearers in families with hereditary forms of medullary thyroid cancer" @default.
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- W2481796262 doi "https://doi.org/10.14341/ket2016122-33" @default.
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