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Koot A, Soares P, Robenshtok E, Locati LD, de la Fouchardiere C, Luster M, Bongiovanni M, Hermens R, Ottevanger P, Geenen F, Bartѐs B, Rimmele H, Durante C, Nieveen-van Dijkum E, Stalmeier P, Dedecjus M, Netea-Maier R. Position paper from the Endocrine Task Force of the European Organisation for Research and Treatment of Cancer (EORTC) on the management and shared decision making in patients with low-risk micro papillary thyroid carcinoma. Eur J Cancer 2023; 179:98-112. [PMID: 36521335 DOI: 10.1016/j.ejca.2022.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/30/2022] [Accepted: 11/01/2022] [Indexed: 11/16/2022]
Abstract
The incidence of differentiated thyroid cancer (DTC) has been increasing worldwide, mostly, as an increase in the incidental detection of micro papillary thyroid carcinomas (microPTCs), many of which are potentially overtreated, as suggested by the unchanged mortality. Several international guidelines have suggested a less aggressive approach. More recently, it has been shown that active surveillance or minimally invasive treatments (MIT) are good alternatives for the management of these patients. In this context, patient participation in the decision-making process is paramount. The Endocrine Task Force of the European Organisation for Research and Treatment of Cancer (EORTC) has undertaken the task to establish consensus and define its position based on the scientific evidence concerning, 1) the current state of diagnostic and management options in microPTCs, including the current opinion of physicians about shared decision making (SDM), 2) the available evidence concerning patients' needs and the available decision instruments, and 3) to provide practical suggestions for implementation of SDM in this context. To improve SDM and patients' participation, knowledge gaps and research directions were highlighted.
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Affiliation(s)
- Anna Koot
- Department of Internal Medicine, Division of Endocrinology, Radboud University Medical Center, 6525 GA Nijmegen, the Netherlands; Radboud Institute for Health Sciences, Department for Health Evidence, Radboud University Medical Center, 6500 HB Nijmegen, the Netherlands.
| | - Paula Soares
- Institute for Research and Innovation in Health - i3S/Institute of Molecular Pathology and Immunology of the University of Porto-IPATIMUP, 4200-135 Porto, Portugal; Faculty of Medicine of the University of Porto, Alameda Prof. Hernani Monteiro, 4200-319 Porto, Portugal
| | - Eyal Robenshtok
- Endocrinology and Metabolism Institute, Rabin Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Israel
| | - Laura D Locati
- Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy; Translational Oncology Unit, IRCCS Instituti Clinici Scientifici Maugeri, Pavia, Italy
| | | | - Markus Luster
- Department of Nuclear Medicine, University Hospital Marburg, Marburg, Germany
| | - Massimo Bongiovanni
- Internal Medicine Unit, Department of Medicine, Ospedale di Circolo di Rho, ASST Rhodense, Milan, Italy
| | - Rosella Hermens
- Scientific Institute for Quality of Healthcare (IQ Healthcare), Radboud University Medical Center, 6500 HB Nijmegen, the Netherlands
| | - Petronella Ottevanger
- Department of Internal Medicine, Division of Oncology, Radboud University Medical Center, 6525 GA Nijmegen, the Netherlands
| | - Frans Geenen
- Schildklierorganisatie Nederland (SON), the Netherlands
| | | | - Harald Rimmele
- Bundesverband Schilddrüsenkrebs - Ohne Schilddrüse Leben e.V., Germany
| | - Cosimo Durante
- Department of Translational and Precision Medicine, Sapienza University of Rome, 00161 Rome, Italy
| | - Els Nieveen-van Dijkum
- Department of Surgery, Amsterdam UMC Location University of Amsterdam, Cancer Center Amsterdam, the Netherlands
| | - Peep Stalmeier
- Radboud Institute for Health Sciences, Department for Health Evidence, Radboud University Medical Center, 6500 HB Nijmegen, the Netherlands
| | - Marek Dedecjus
- Department of Endocrine Oncology and Nuclear Medicine, Maria Skłodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - Romana Netea-Maier
- Department of Internal Medicine, Division of Endocrinology, Radboud University Medical Center, 6525 GA Nijmegen, the Netherlands
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Alyami J, Almutairi FF, Aldoassary S, Albeshry A, Almontashri A, Abounassif M, Alamri M. Interobserver variability in ultrasound assessment of thyroid nodules. Medicine (Baltimore) 2022; 101:e31106. [PMID: 36254067 PMCID: PMC9575780 DOI: 10.1097/md.0000000000031106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The first diagnostic tool for thyroid disease management is ultrasound. Despite its importance, ultrasound is an extremely subjective procedure that requires a high level of performance skill. Few studies have assessed thyroid ultrasound performance and its effectiveness, particularly the variability between observers in the assessment of ultrasound images. This study evaluated the variability in ultrasound assessments and diagnoses of thyroid nodules between 2 radiologists. In this retrospective study, 75 thyroid nodules in 39 patients were reviewed by 2 experienced radiologists. The nodule composition, margin, shape, calcification, and vasculitis were determined using echogenicity. The study evaluation included these 5 assessments and the final diagnosis. Interobserver variation was determined using Cohen kappa statistics. The interobserver agreements in the interpretation of echogenicity, shape, and margin were fair (κ = 0.21-0.40), whereas there were substantial agreements for vascularity and calcification (κ = 0.62-0.78). The agreements between the observers for individual ultrasound features in this study were the highest for vascularity and the presence/absence of calcification. The interobserver reproducibility for thyroid nodule ultrasound reporting was adequate, but the diagnostic evaluation ability of the observers was inconsistent. The variability in the interpretation of sonographic features could influence the level of suspicion of thyroid malignancy. This study emphasizes the need for consistency in the training of sonographic interpretation of thyroid nodules, particularly for echogenicity, shape, and margin.
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Affiliation(s)
- Jaber Alyami
- Department of Diagnostic Radiology, Faculty of Applied Medical Science, Imaging Unit, King Fahad Medical Research Centre, King Abdulaziz, Jeddah, Saudi Arabia
- Animal House Unit, King Fahad Medical Research Center, Faculty of Applied Medical Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Smart Medical Imaging Research Group, King Abdulaziz University, Jeddah, Saudi Arabia
- *Correspondence: Jaber Alyami, Department of Diagnostic Radiology, Faculty of Applied Medical Science, King Abdul-Aziz University (KAU), Jeddah, Saudi Arabia (e-mail: )
| | - Fahad F. Almutairi
- Department of Diagnostic Radiology, Faculty of Applied Medical Science, Imaging Unit, King Fahad Medical Research Centre, King Abdulaziz, Jeddah, Saudi Arabia
- Animal House Unit, King Fahad Medical Research Center, Faculty of Applied Medical Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Smart Medical Imaging Research Group, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sultan Aldoassary
- Radiology Department, King Saud Medical City, Ministry of Health, Riyadh, Saudi Arabia
| | - Amani Albeshry
- Radiology Department, King Saud Medical City, Ministry of Health, Riyadh, Saudi Arabia
| | - Ali Almontashri
- Radiology Department, King Saud Medical City, Ministry of Health, Riyadh, Saudi Arabia
| | - Mazen Abounassif
- Radiology Department, King Saud Medical City, Ministry of Health, Riyadh, Saudi Arabia
| | - Majed Alamri
- Animal House Unit, King Fahad Medical Research Center, Faculty of Applied Medical Science, King Abdulaziz University, Jeddah, Saudi Arabia
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Tan L, Ji J, Sharen G, Liu Y, Lv K. Related factor analysis for predicting large-volume central cervical lymph node metastasis in papillary thyroid carcinoma. Front Endocrinol (Lausanne) 2022; 13:935559. [PMID: 36046785 PMCID: PMC9423095 DOI: 10.3389/fendo.2022.935559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 07/19/2022] [Indexed: 11/13/2022] Open
Abstract
The aim of this study was to investigate the factors related to large-volume central cervical lymph node metastasis (LNM) in papillary thyroid carcinoma. A retrospective study of 340 patients with 642 papillary thyroid carcinoma nodules who underwent thyroidectomy in Peking Union Medical College Hospital between 2011 and 2015 was conducted. These nodules were divided into two groups by the number of central cervical lymph node metastases: large-volume central cervical LNM (>5 metastatic lymph nodes, n = 129) and no central cervical LNM (n = 211). We evaluated the correlations between gender, age, chronic lymphocytic thyroiditis, thyroid ultrasonographic features, and large-volume central cervical LNM. We found that younger age (≤40 years) (OR = 3.796, 95% CI = 2.842, 5.070), male gender (OR = 4.005, 95% CI = 2.858, 5.61), and ultrasonographic features such as tumor macroaxis size (OR = 2.985, 95% CI = 1.581, 5.633), tumor located in the isthmus (OR = 7.578, 95% CI = 4.863, 11.810), ill-defined margin (OR = 3.008, 95% CI = 1.986, 4.556), microcalcification (OR = 2.155, 95% CI = 1.585, 2.929), and abnormal cervical lymph nodes (OR = 13.753, 95% CI = 9.278, 20.385) were independent risk factors for large-volume central cervical LNM in papillary thyroid carcinoma, while chronic lymphocytic thyroiditis (OR = 0.248, 95% CI = 0.172, 0.358) was a protective factor. Younger age (≤40 years), male sex, and ultrasonographic features such as tumor macroaxis size, tumor located in the isthmus, ill-defined margin, microcalcification, and abnormal cervical lymph nodes were independent risk factors for large-volume central cervical LNM in papillary thyroid carcinoma, while chronic lymphocytic thyroiditis can be considered a protective factor. Our results provide a reference for adjusting clinical treatment approaches.
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Affiliation(s)
- Li Tan
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jiaqi Ji
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Ultrasound, Aerospace Center Hospital, Beijing, China
| | - Gaowa Sharen
- Department of Health Management, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yuewu Liu
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- *Correspondence: Yuewu Liu, ; Ke Lv,
| | - Ke Lv
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- *Correspondence: Yuewu Liu, ; Ke Lv,
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Hou YL, Chen JJ, Zhang X, Chen H. Evaluation of serum insulin-like growth factor 1 and its significance in thyroid cancer: An observational study. Medicine (Baltimore) 2021; 100:e26165. [PMID: 34032777 PMCID: PMC8154414 DOI: 10.1097/md.0000000000026165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 05/10/2021] [Indexed: 01/04/2023] Open
Abstract
Serum insulin-like growth factor 1 (IGF-1) is elevated in different cancers. However, relationships between serum IGF-1 and thyroid cancer (TC) are scarce. The present study aimed to investigate the clinical significance of serum IGF-1 in TC.Serum was collected from 124 TC patients, 50 patients with benign nodules, and 50 healthy controls. Serum IGF-1 levels were measured and compared. Relationships were investigated between IGF-1 and clinical characteristics. A receiver operating characteristic (ROC) curve was plotted to explore the diagnostic value of IGF-1 in TC.Serum IGF-1 levels were significantly higher in TC than that of healthy controls and benign nodules (P = .003; P < .001). Serum IGF-1 levels were higher in TC patients with advanced stage than early stage (P = .029). Higher serum IGF-1 levels were found in patients with lymph node metastasis present and (tumor size >1 cm) than that of patients without lymph node metastasis (P = .018) and (tumor size ≤1 cm) (P = .031). Serum IGF-1 levels were higher in patients with a solitary nodule than multinodular nodules (P = .043). The serum IGF-1 cutoff value for a TC diagnosis was 216 ng/mL with a sensitivity of 53.2%, a specificity of 74.0%, a positive predictive value (PPV) of 83.5%, and an area under the curve was of 0.71.Serum IGF-1 was significantly correlated with tumor stage, size, and lymph node metastasis. Serum IGF-1 shows great potential as a laboratory marker for TC.
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Affiliation(s)
| | | | - Xiang Zhang
- Department of Endocrine & Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Update on thyroid ultrasound: a narrative review from diagnostic criteria to artificial intelligence techniques. Chin Med J (Engl) 2020; 132:1974-1982. [PMID: 31348028 PMCID: PMC6708700 DOI: 10.1097/cm9.0000000000000346] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Objective Ultrasound imaging is well known to play an important role in the detection of thyroid disease, but the management of thyroid ultrasound remains inconsistent. Both standardized diagnostic criteria and new ultrasound technologies are essential for improving the accuracy of thyroid ultrasound. This study reviewed the global guidelines of thyroid ultrasound and analyzed their common characteristics for basic clinical screening. Advances in the application of a combination of thyroid ultrasound and artificial intelligence (AI) were also presented. Data sources An extensive search of the PubMed database was undertaken, focusing on research published after 2001 with keywords including thyroid ultrasound, guideline, AI, segmentation, image classification, and deep learning. Study selection Several types of articles, including original studies and literature reviews, were identified and reviewed to summarize the importance of standardization and new technology in thyroid ultrasound diagnosis. Results Ultrasound has become an important diagnostic technique in thyroid nodules. Both standardized diagnostic criteria and new ultrasound technologies are essential for improving the accuracy of thyroid ultrasound. In the standardization, since there are no global consensus exists, common characteristics such as a multi-feature diagnosis, the performance of lymph nodes, explicit indications of fine needle aspiration, and the diagnosis of special populations should be focused on. Besides, evidence suggests that AI technique has a good effect on the unavoidable limitations of traditional ultrasound, and the combination of diagnostic criteria and AI may lead to a great promotion in thyroid diagnosis. Conclusion Standardization and development of novel techniques are key factors to improving thyroid ultrasound, and both should be considered in normal clinical use.
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Jin A, Li Y, Shen J, Zhang Y, Wang Y. Clinical Value of a Computer-Aided Diagnosis System in Thyroid Nodules: Analysis of a Reading Map Competition. ULTRASOUND IN MEDICINE & BIOLOGY 2019; 45:2666-2671. [PMID: 31281010 DOI: 10.1016/j.ultrasmedbio.2019.06.405] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 05/20/2019] [Accepted: 06/10/2019] [Indexed: 06/09/2023]
Abstract
We evaluated the accuracy of human and computer-aided diagnosis (CAD) in a reading map diagnosis competition for detection of thyroid cancers via ultrasonography (US). The competition comprised 33 thyroid nodule images randomly chosen between 2015 and 2017. One hundred seventy-seven contestants including one operator using CAD participated in the competition. The competition was separated into an online part and a live part. We compared the average accuracy of contestants and CAD in the detection of thyroid cancers. The accuracy of contestants and the CAD system was 60.3% and 84.8%, respectively. The accuracy of the CAD system was higher than that of the contestants with different technical titles. The areas under the curve for CAD and contestants were 0.985 (0.881-1.00) and 0.659 (0.645-0.673) (Z = 7.55, p < 0.01). The CAD system had high accuracy in this thyroid nodule reading map competition, and may be an adjuvant tool for radiologists.
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Affiliation(s)
- Anqi Jin
- Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China; Shanghai Institute of Ultrasound in Medicine, Shanghai, China
| | - Yi Li
- Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China; Shanghai Institute of Ultrasound in Medicine, Shanghai, China
| | - Jian Shen
- Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China; Shanghai Institute of Ultrasound in Medicine, Shanghai, China
| | - Yichun Zhang
- Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China; Shanghai Institute of Ultrasound in Medicine, Shanghai, China
| | - Yan Wang
- Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China; Shanghai Institute of Ultrasound in Medicine, Shanghai, China.
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Qadan L, Ahmed A, Kapila K. Thyroid Ultrasound Reports: Deficiencies and Recommendations. Med Princ Pract 2019; 28:280-283. [PMID: 30739108 PMCID: PMC6597922 DOI: 10.1159/000497789] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 02/10/2019] [Indexed: 01/25/2023] Open
Abstract
OBJECTIVE Thyroid ultrasound plays a major role in the clinical management of patients with thyroid nodules. Comprehensive reporting enables malignant risk stratification and biopsy decisions. In this study, we aimed at a systematic evaluation of the content and completeness of thyroid radiology reports. METHODS A retrospective study was undertaken. A total of 200 thyroid ultrasound reports of examinations performed over a 1-year period were reviewed. After excluding 18 reports, the remaining 182 were evaluated for the inclusion of the following nodule characteristics: size, 3-axis dimensions, location, presence or absence of five signs suspicious of malignancy, namely microcalcification, hypoechogenecity, irregular margin, height-to-width ratio, and intranodular vascularity. RESULTS While all reported nodules could be stratified easily as being more or less than 1 cm in size, only 23.6% of these nodules were reported in 3 dimensions, and 33.5% of the nodules were specifically localized. For any described nodule, the frequency of reporting on echogenicity was 50%, on vascularity 19.2%, on margin 10.4%, on calcifications 9.3%, and no report contained a description of the height-to-width ratio. The cumulative frequency of reporting on one characteristic per nodule was 84%, of two characteristics 27%, three characteristics 4.4%, and no report included ≥4 characteristics per nodule. CONCLUSION Despite easily accessible templates, reporting of thyroid nodule sonogram continues to be incomplete and inconsistent. This in turn constitutes a waste of a significant tool that could otherwise help in making timely informed medical decisions and in providing a significant platform for patients' future follow-up.
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Affiliation(s)
- Laila Qadan
- Department of Medicine, Faculty of Medicine, Kuwait University, Jabriya, Kuwait,
| | - Adel Ahmed
- Department of Radiology, Faculty of Medicine, Kuwait University, Jabriya, Kuwait
| | - Kusum Kapila
- Department of Pathology, Faculty of Medicine, Kuwait University, Jabriya, Kuwait
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Incomplete Thyroid Ultrasound Reports for Patients With Thyroid Nodules: Implications Regarding Risk Assessment and Management. AJR Am J Roentgenol 2018; 211:1348-1353. [PMID: 30332287 DOI: 10.2214/ajr.18.20056] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE The purpose of this study was to determine the completeness of thyroid ultrasound (US) reports, assess for differences in report interpretation by clinicians, and evaluate for implications in patient care. MATERIALS AND METHODS We retrospectively reviewed thyroid US examinations performed between January and June 2013 in Nova Scotia, Canada. Baseline examinations that identified a nodule were evaluated for 10 reporting elements. Reports that lacked a comment regarding malignancy risk or a recommendation for biopsy were considered unclassified and were graded by three clinical specialists in accordance with the 2015 American Thyroid Association management guidelines. Interrater agreement was assessed using the Cohen kappa statistic. A radiologist reviewed the images of unclassified nodules, and on the basis of radiologic grading, biopsy rates and pathologic findings were compared between nodules that did and did not warrant biopsy. RESULTS Of 971 first-time thyroid US studies, 478 detected a nodule. The number of reports lacking a comment on the 10 elements ranged from 154 to 433 (32-91%). A total of 222 nodules (46%) were unclassified, and agreement in assigned grading by the clinical specialists was very poor (κ = 0.07; p < 0.05). According to radiologist grading, only 57 of 127 biopsies were performed on nodules that warranted biopsy, and 16 of 95 biopsies were performed unnecessarily. On the basis of the three clinical specialists' interpretation, 10, 31, and 33 reports were considered too incomplete to assign a grade; 40, 10, and four biopsies would have been unnecessarily ordered; and zero, three, and four cancers would have been missed. CONCLUSION There is widespread underreporting of established elements in thyroid US reports, and this causes confusion and discrepancy among clinical specialists regarding the risk of malignancy and the need for biopsy.
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Lopes NG, Lacet DFR, Lopes de Almeida D, Costa MB, Leal CTDS. A importância da descrição ultrassonográfica padronizada e da punção aspirativa por agulha fina na avaliação de nódulos tireoidianos. HU REVISTA 2018. [DOI: 10.34019/1982-8047.2017.v43.2819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Nódulos tireoidianos são muito frequentes, sendo detectáveis pela palpação em cerca de 5% das mulheres. A ultrassonografia e a punção aspirativa por agulha fina (PAAF) são métodos diagnósticos largamente utilizados na propedêutica da doença nodular da tireoide. O objetivo deste estudo foi descrever a utilização da PAAF em pacientes com nódulos tireoidianos submetidos à tireoidectomia. Foram incluídos 20 pacientes, com média de idade de 46±14 anos, (02 homens/18 mulheres), submetidos à PAAF e tireoidectomia em um hospital universitário, entre janeiro/2010 e abril/2016. Apenas 12,5% dos laudos ultrassonográficos descreveram o tamanho dos nódulos em três dimensões e nenhum deles continha todos os itens recomendados para caracterização adequada de um nódulo tireoidiano. De um total de 32 nódulos estudados, 8% constituíram amostra não diagnóstica (categoria Bethesda I). Após tireoidectomia, seis (28%) pacientes apresentaram carcinoma papilífero, sendo dois (33,3%) classificados como Bethesda III e quatro (66,6%) Bethesda V e VI. Observou-se que a falta de padronização dos laudos ultrassonográficos de tireoide pode retardar a investigação diagnóstica e gerar custos elevados para o sistema de saúde. Em contrapartida, o sistema Bethesda está bem consolidado como uma ferramenta para direcionar a conduta frente à doença nodular de tireoide.
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