Sentinel lymph node biopsy in medullary thyroid microcarcinomas

Main Authors: Santrač Nada, Marković Ivan, Medić Milijić Nataša, Goran Merima, Buta Marko, Đurišić Igor, Džodić Radan
Format: Article Journal
Bahasa: eng
Terbitan: , 2020
Subjects:
000
Online Access: https://zenodo.org/record/4715208
ctrlnum 4715208
fullrecord <?xml version="1.0"?> <dc schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><creator>Santra&#x10D; Nada</creator><creator>Markovi&#x107; Ivan</creator><creator>Medi&#x107; Miliji&#x107; Nata&#x161;a</creator><creator>Goran Merima</creator><creator>Buta Marko</creator><creator>&#x110;uri&#x161;i&#x107; Igor</creator><creator>D&#x17E;odi&#x107; Radan</creator><date>2020-04-23</date><description>The aim of this prospective study was to analyze accuracy of sentinel lymph node biopsy with methylene blue dye for intraoperative detection of lateral metastases in clinically N0M0 medullary microcarcinomas with calcitonin &lt;1,000 pg/mL and selection of true-positive patients for one-time therapeutic lateral dissection. In addition to total thyroidectomy and central neck dissection, all patients had bilateral sentinel biopsy of jugulo-carotid regions after methylene blue injection to decide upon necessity for lateral dissection. If sentinels were benign on frozen section, additional nonsentinels were extirpated, with no further lateral dissection. If sentinels were malignant, one-time lateral dissection was performed. 20 patients were included in this study. Hereditary disease form was observed in 3/20 (15%) of patients with RET proto-oncogene mutation C634F; remaining 17/20 (85%) were negative for germline mutations. There were no allergic reactions to methylene blue and identification rate of sentinels was 100%. In total, 2/20 (10%) cN0 patients had lymphonodal metastases, thus were reclassified as pN1b. Remaining 18/20 (90%) were classified pN0 based on standard pathohistology. Frozen section findings on sentinels were 100% match with standard pathohistology, and there were no skip metastases in lateral compartments. Sensitivity, specificity and accuracy of sentinel biopsy method with methylene dye and frozen section were 100%. Dzodic&#x2019;s sentinel lymph node biopsy method can be used for intraoperative assessment of lateral compartments and optimization of initial surgery of medullary microcarcinomas with calcitonin &lt;1,000 pg/mL. This way, cN0 patients with sentinel metastases can receive one-time lateral dissection, and those without benefit from less extensive surgery.</description><description>The authors would like to thank prof. Akira Miyauchi, Kobe, Japan, for kindly providing us necessary information on Japanese recommendations on management of medullary thyroid carcinoma, given that original guidelines are in Japanese language. This research was conducted as a part of the project of the Ministry of Science of Republic of Serbia, number 111601, that started in 2005 "Early detection of lymphonodal metastases by pathohistological verification of sentinel lymph nodes in malignant epithelial tumors".</description><identifier>https://zenodo.org/record/4715208</identifier><identifier>10.1507/endocrj.EJ19-0409</identifier><identifier>oai:zenodo.org:4715208</identifier><language>eng</language><relation>pmid:31801918</relation><relation>url:https://zenodo.org/communities/iors</relation><rights>info:eu-repo/semantics/openAccess</rights><rights>https://creativecommons.org/licenses/by/4.0/legalcode</rights><source>Endocr J 67(3) 295-304</source><subject>Medullary thyroid microcarcinoma</subject><subject>Calcitonin below 1,000</subject><subject>Methylene blue dye</subject><subject>Sentinel lymph node biopsy</subject><subject>Lateral neck dissection</subject><title>Sentinel lymph node biopsy in medullary thyroid microcarcinomas</title><type>Journal:Article</type><type>Journal:Article</type><recordID>4715208</recordID></dc>
language eng
format Journal:Article
Journal
Journal:Journal
author Santrač Nada
Marković Ivan
Medić Milijić Nataša
Goran Merima
Buta Marko
Đurišić Igor
Džodić Radan
title Sentinel lymph node biopsy in medullary thyroid microcarcinomas
publishDate 2020
topic Medullary thyroid microcarcinoma
Calcitonin below 1
000
Methylene blue dye
Sentinel lymph node biopsy
Lateral neck dissection
url https://zenodo.org/record/4715208
contents The aim of this prospective study was to analyze accuracy of sentinel lymph node biopsy with methylene blue dye for intraoperative detection of lateral metastases in clinically N0M0 medullary microcarcinomas with calcitonin <1,000 pg/mL and selection of true-positive patients for one-time therapeutic lateral dissection. In addition to total thyroidectomy and central neck dissection, all patients had bilateral sentinel biopsy of jugulo-carotid regions after methylene blue injection to decide upon necessity for lateral dissection. If sentinels were benign on frozen section, additional nonsentinels were extirpated, with no further lateral dissection. If sentinels were malignant, one-time lateral dissection was performed. 20 patients were included in this study. Hereditary disease form was observed in 3/20 (15%) of patients with RET proto-oncogene mutation C634F; remaining 17/20 (85%) were negative for germline mutations. There were no allergic reactions to methylene blue and identification rate of sentinels was 100%. In total, 2/20 (10%) cN0 patients had lymphonodal metastases, thus were reclassified as pN1b. Remaining 18/20 (90%) were classified pN0 based on standard pathohistology. Frozen section findings on sentinels were 100% match with standard pathohistology, and there were no skip metastases in lateral compartments. Sensitivity, specificity and accuracy of sentinel biopsy method with methylene dye and frozen section were 100%. Dzodic’s sentinel lymph node biopsy method can be used for intraoperative assessment of lateral compartments and optimization of initial surgery of medullary microcarcinomas with calcitonin <1,000 pg/mL. This way, cN0 patients with sentinel metastases can receive one-time lateral dissection, and those without benefit from less extensive surgery.
The authors would like to thank prof. Akira Miyauchi, Kobe, Japan, for kindly providing us necessary information on Japanese recommendations on management of medullary thyroid carcinoma, given that original guidelines are in Japanese language. This research was conducted as a part of the project of the Ministry of Science of Republic of Serbia, number 111601, that started in 2005 "Early detection of lymphonodal metastases by pathohistological verification of sentinel lymph nodes in malignant epithelial tumors".
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