Malignant Tumors of Thyroid Gland

Czech version

Authors: B. Uhliarová ^1,2; G. Bugová ¹; A. Hajtman ¹
Authors‘ workplace: Klinika otorinolaryngológie a chirurgie hlavy a krku JLF UK a UN Martin, Slovenská republika ¹; Otorinolaryngologické oddelenie, FNsP F. D. Roosevelta Banská Bystrica, Slovenská republika ²
Published in: Klin Onkol 2015; 28(2): 121-129
Category: Original Articles
doi: https://doi.org/10.14735/amko2015121

Overview

Aim:
The incidence of thyroid cancer has been increasing. The aim of this work was to determine risk factors, diagnostic methods and extent of surgical treatment of malignant goiter.

Material and Methods:
The authors retrospectively analyzed patients who were surgically treated for thyroid disease at the Department of Otorhinolaryngology, Head and Neck Surgery, Comenius University, Jessenius Faculty of Medicine, Teaching Hospital in Martin, Slovakia, from the January 1^st, 2006 to December 31^st, 2013, for thyroid disease. The incidence, risk factors of malignant thyroid tumors, indication for surgery and its complications were evaluated.

Results:
A total of 1,620 adult patients were surgically treated for thyroid disease at the Department of ENT, Head and Neck Surgery, CU JMF, UH in Martin, Slovakia, between 2006– 2013. Malignant tumors were identified in 238 patients (15%). Microcarcinoma (incidentally detected malignant tumor ≤ 1 cm) occurred in 78 cases (5%). Malignant thyroid tumor was more common in younger patients (p = 0.002). Newly created and larger nodules positively correlated with the occurrence of malignancy (p = 0.003, p = 0.041, resp.). Gender, family history of thyroid disorder, previous radiation therapy, and previous malignancy did not affect the incidence of malignant tumor of thyroid gland. High sensitivity and specificity in the diagnosis of malignant thyroid nodule was observed using aspiration cytology (75%, 97%, resp.) and intraoperative histopathological examination (88%, 100%, resp.).

Conclusion:
Malignant tumor of thyroid gland is more common in younger patients with newly developed nodule. The risk factors of malignancy increase with the size of the thyroid nodule. Aspiration cytology and peroperative histopathology have high sensitivity and specificity in the diagnosis of malignant thyroid tumor; therefore, they should be a standard method in the diagnosis of nodular goiter. The method of choice in the treatment of thyroid malignancy is total thyroidectomy.

Key words:
neoplasm – thyroid gland – risk factors – aspiration cytology – intraoperative histology – thyroidectomy

The authors declare they have no potential conflicts of interest concerning drugs, products, or services used in the study.

The Editorial Board declares that the manuscript met the ICMJE “uniform requirements” for biomedical papers.

Submitted:
1. 12. 2014

Accepted:
20. 1. 2015

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