scholarly journals Does Tumor Size Influence the Diagnostic Accuracy of Ultrasound-Guided Fine-Needle Aspiration Cytology for Thyroid Nodules?

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Do Hoon Koo ◽  
KwangSeop Song ◽  
Hyungju Kwon ◽  
Dong Sik Bae ◽  
Ji-hoon Kim ◽  
...  
Keyword(s):  
Fine Needle Aspiration ◽  
Predictive Value ◽  
Fine Needle Aspiration Cytology ◽  
Thyroid Nodules ◽  
False Negative ◽  
Needle Aspiration ◽  
Aspiration Cytology ◽  
Fine Needle ◽  
Needle Aspiration Cytology ◽  
Accuracy Rates

Background. Fine-needle aspiration cytology (FNAC) is diagnostic standard for thyroid nodules. However, the influence of size on FNAC accuracy remains unclear especially in too small or too large thyroid nodules. The objective of this retrospective cohort study was to investigate the effect of nodule size on FNAC accuracy. Methods. All consecutive patients who underwent thyroidectomy for nodules in 2010 were enrolled. FNAC results (according to the Bethesda system) were compared to pathological diagnosis. The nodules were categorized into groups A–E on the basis of maximal diameter on ultrasound (≤0.5, >0.5–1, >1-2, >2–4, and >4 cm, resp.). Results. There were 502 cases with 690 nodules. Overall FNAC sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were 95.4%, 98.2%, 99.4%, 86.4%, and 96.0%, respectively. False-negative rates (FNRs) of groups A–E were 3.2%, 5.1%, 1.3%, 13.3%, and 50%, respectively. Accuracy rates of groups A–E were 96.8%, 94.8%, 99%, 94.7%, and 87.5%, respectively. Conclusion. Although accuracy rates of FNAC in thyroid nodules smaller than 0.5 cm are comparable to the other group, thyroid nodules larger than 4 cm with benign cytology carry a higher risk of malignancy, which suggest that those should be considered for intensive follow-up or repeated biopsy.

scholarly journals Diagnostic Accuracy of Fine Needle Aspiration Cytology of Thyroid Pathologies

2020 ◽  
Vol 19 (2) ◽  
pp. 84-89
Author(s):  
Shova Kunwar ◽  
Barsha Bajracharya ◽  
Kavita Karmacharya ◽  
Amar Narayan Shrestha
Keyword(s):  
Fine Needle Aspiration ◽  
Predictive Value ◽  
Fine Needle Aspiration Cytology ◽  
False Negative ◽  
False Negative Rate ◽  
Needle Aspiration ◽  
Aspiration Cytology ◽  
Thyroid Lesion ◽  
Fine Needle ◽  
Needle Aspiration Cytology

Introduction: Fine needle aspiration cytology is considered as the gold standard for the diagnosis of thyroid nodules. This study aimed to evaluate and compare the accuracy of fine-needle aspiration cytology in the diagnosis of thyroid lesion by comparing it with the corresponding histopathologic diagnosis after thyroidectomy. Methods: This is a retrospective study conducted over five years at a teaching hospital in Kathmandu. Eighty-nine cases of FNAC of thyroid nodule with subsequent histopathological reports were reviewed. The corresponding reports were compared and the accuracy of FNAC diagnosis was evaluated. Results: 87% of the cases were females and the majority of cases were in the age group 41 to 50 years. Among 89 cases, 55 were reported as benign on cytology and 34 were reported as malignant. On histopathological examination, out of 55 cases diagnosed as benign on cytology, 47 cases were diagnosed as benign whereas eight cases were diagnosed as malignant. HPE of 34 cases diagnosed as malignant on cytology showed that 29 were malignant and five were benign. The false-positive rate was 9.6% and the false-negative rate was 21.6%. The sensitivity was 78.3% and specificity was 90.3%. The positive predictive value and negative predictive value were 85.2% and 85.4% respectively. The accuracy of FNAC in differentiating benign from malignant thyroid lesions was 85.3%. Conclusions: The findings of this study showed that FNAC is a sensitive method for the diagnosis of a solid thyroid lesion

scholarly journals Comparison of Elastographic Strain Index and Thyroid Fine-Needle Aspiration Cytology in 631 Thyroid Nodules

2013 ◽  
Vol 98 (12) ◽  
pp. 4790-4797 ◽  
Author(s):  
Flavia Magri ◽  
Spyridon Chytiris ◽  
Valentina Capelli ◽  
Margherita Gaiti ◽  
Francesca Zerbini ◽  
...  
Keyword(s):  
Negative Predictive Value ◽  
Fine Needle Aspiration ◽  
Predictive Value ◽  
Fine Needle Aspiration Cytology ◽  
Thyroid Nodules ◽  
Needle Aspiration ◽  
Aspiration Cytology ◽  
Strain Index ◽  
Fine Needle ◽  
Needle Aspiration Cytology

Context: Ultrasound (US) elastography (USE) was recently been reported as a sensitive, noninvasive tool for identifying thyroid cancer. However, the accuracy of this technique is hampered by the intra- and interoperator variability, some US features of the nodule, and the coexistence of autoimmune thyroid disease (ATD). Objectives: The purpose of this article was to assess the accuracy of USE findings in the differential diagnosis of thyroid nodules compared with other US features to evaluate its feasibility in the presence of ATDs and identify the strain index (SI) cutoff with the highest diagnostic performance. Design: We evaluated 528 consecutive patients for a total of 661 thyroid nodules. All nodules underwent fine-needle aspiration cytology (FNAC) and USE evaluation. The SI was calculated as a ratio of the nodule strain divided by the strain of the softest part of the surrounding normal tissue. Results: The median SI value was significantly higher in THY4 and THY5 than in THY2 nodules in ATD-positive, ATD-negative, and ATD-unknown patients. The cutoff of SI for malignancy was estimated to be 2.905 by receiver operating characteristic curve analysis in a screening set (379 FNAC results), and then tested in a replication set (252 FNAC results). In all cases, a SI value of ≥2.905 conferred to the nodule a significantly greater probability of being malignant. This SI cutoff had the greatest area under the curve, sensitivity, and negative predictive value, compared with the conventional US features of malignancy. Conclusion: The elastographic SI has a high sensitivity, specificity, and negative predictive value for the diagnosis of thyroid malignancy both in the presence and in the absence of ATD. If our data on USE are also confirmed in THY3 nodules, FNAC could be avoided in a number of thyroid nodules with certain features.

scholarly journals Role of Fine Needle Aspiration Cytology in Evaluation of Bony Lesions

2021 ◽  
Author(s):  
Arpita Singhvi ◽  
SR Negi ◽  
Hemant Jain ◽  
Meeta Dewal ◽  
Rajnee Joshi ◽  
...  
Keyword(s):  
Fine Needle Aspiration ◽  
Predictive Value ◽  
Fine Needle Aspiration Cytology ◽  
False Negative ◽  
Needle Aspiration ◽  
Aspiration Cytology ◽  
Fine Needle ◽  
Bony Lesions ◽  
Needle Aspiration Cytology ◽  
Standard Techniques

Introduction: Fine Needle Aspiration Cytology (FNAC) is increasingly being recognised for its diagnostic utility in evaluation of bone tumours. Though open surgical biopsy is the procedure of choice for diagnosis of bony tumours. Aim: To evaluate the efficacy and reliability of FNAC in diagnosis of bony tumours. Materials and Methods: This cross-sectional study included 40 patients with bony lesions from July 2018 to December 2019 in tertiary level centre of Rajasthan. The FNAC was performed after clinical and radiological assessment. The smears were stained using standard techniques. Also, open biopsy was performed in the patients who presented with bony lesions of patients and slides prepared for histopathological examination using standard techniques. The data was entered in Excel sheets and the results were evaluated using Statistical Package for Social Sciences (SPSS) software version 20.0. Results: Adequate material was obtained in FNAC in 29 (72.5%) cases. Out of 29 cases, FNAC results were accurate in 96.5% cases. False Negative report was obtained in one case with no false positives. Sensitivity of FNAC in diagnosing bony lesions comes to be 90% and Specificity was 100%. The Positive Predictive Value (PPV) was 100% and the Negative Predictive Value (NPV) 95.4%. Conclusion: The FNAC is invaluable tool in primary diagnosis of bony lesions. The technique of obtaining sufficient material though needs to be mastered and will definitely improve with more experience and radiologic correlation.

scholarly journals Exploring the Diagnostic Efficacy of Fine-Needle Aspiration Cytology in Thyroid Nodules ≥ 4 cm: Results from a Tertiary Health Care Center in Jharkhand

2018 ◽  
Vol 4 (02) ◽  
pp. 054-056
Author(s):  
Rajeev Bhardwaj ◽  
Rishabh Kumar Rana
Keyword(s):  
Fine Needle Aspiration ◽  
Fine Needle Aspiration Cytology ◽  
Thyroid Nodules ◽  
False Negative ◽  
Needle Aspiration ◽  
Histopathologic Examination ◽  
Aspiration Cytology ◽  
Fine Needle ◽  
Malignancy Rate ◽  
Needle Aspiration Cytology

Abstract Background Any nodules of the thyroid, ≥ 4 cm, are generally associated with false-negative results for malignancy on fine-needle aspiration cytology (FNAC), which generally are confirmed cases of malignancy after histopathologic examinations. Methods A retrospective hospital-based study was done in which data of patients having thyroid lesions ≥ 4 cm were reviewed. We checked the FNAC and histopathologic examination done on these lesions. Ultrasonography (USG)–guided aspiration records were also assessed. Sensitivity and specificity of FNAC for the detection of neoplastic or malignant lesions was determined. Results A total of 192 patients (57 female) were included in study. Preoperative fine-needle aspiration (FNA) biopsies were categorized as negative for malignancy (n = 183, 63%), suspicious (n = 6, 4%), and malignant (n = 4, 2%). Final pathology of nodule was found to be benign in 157 (81.35%) patients, whereas in 36 (18.65%) patients, nodules were found to be malignant. Conclusion In this study, we found the malignancy rate of thyroid nodules ≥ 4 cm to be similar to the accepted malignancy rate of smaller thyroid nodules. We missed 32 cases of malignancy on FNAC. Because of high incidence of thyroid malignancy, all nodules ≥ 4 cm must undergo histopathologic examination.

Malignancy risk and false-negative rate of fine needle aspiration cytology in thyroid nodules ≥4.0 cm

Surgery ◽  
2016 ◽  
Vol 160 (2) ◽  
pp. 405-412 ◽  
Author(s):  
Nagihan Bestepe ◽  
Didem Ozdemir ◽  
Abbas Ali Tam ◽  
Fatma Dilek Dellal ◽  
Aydan Kilicarslan ◽  
...  
Keyword(s):  
Fine Needle Aspiration ◽  
Fine Needle Aspiration Cytology ◽  
Thyroid Nodules ◽  
False Negative ◽  
False Negative Rate ◽  
Needle Aspiration ◽  
Aspiration Cytology ◽  
Fine Needle ◽  
Malignancy Risk ◽  
Needle Aspiration Cytology

Diagnostic accuracy of fine needle aspiration cytology of thyroid nodules

Diagnosis ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 61-66
Author(s):  
Taskin Erkinuresin ◽  
Hakan Demirci
Keyword(s):  
Diagnostic Accuracy ◽  
Fine Needle Aspiration ◽  
Predictive Value ◽  
Fine Needle Aspiration Cytology ◽  
Thyroid Nodules ◽  
Needle Aspiration ◽  
Histopathological Diagnosis ◽  
Aspiration Cytology ◽  
Fine Needle ◽  
Needle Aspiration Cytology

AbstractBackgroundRoutine application of fine needle aspiration cytology (FNAC) has decreased unnecessary referral of thyroid nodules for surgical treatment and has also increased the cancer rates found in surgery materials. Success of thyroid FNAC depends on skilled aspiration, skilled cytological interpretation and rational analysis of cytological and clinical data. The aim of this study was to determine the diagnostic accuracy rates of thyroid FNAC results obtained in our institution.MethodsThe data from FNAC and thyroidectomy reports of patients presenting with goiter and who had been evaluated from 1st January 2014 to 1st March 2018 were used. There were 149 patients in total who had undergone thyroidectomy following FNAC. The Bethesda System for Reporting Thyroid Cytology was used in all cytological diagnoses.ResultsThe sensitivity of thyroid FNAC for malignant cases was 57.89%, specificity was 88.10%, false-positive rate was 11.90%, false-negative rate was 42.11%, positive predictive value was 52.38%, negative predictive value was 90.24% and accuracy rate was 82.52%. “Focus number” variable was detected as the factor that affected the accurate prediction of FNAC and thyroidectomy results by the pathologist.ConclusionsThis study showed that there was a moderate conformity between thyroid FNAC and thyroidectomy cyto-histopathological diagnosis in malignant cases. As two or more nodules have a negative effect on the physician’s diagnosis of malignant nodules, we think that a more sensitive approach is needed in the determination of these cases. Sampling defects may affect this non-matching.

Role of fine needle aspiration cytology in the preoperative diagnosis of malignancy in parotid and submandibular gland neoplasm

2014 ◽  
Vol 19 (2) ◽  
pp. 110-118
Author(s):  
Mohammad Amzad Hossain ◽  
Md Zahedul Alam ◽  
Md Rojibul Haque ◽  
Md Nazmul Haque ◽  
KM Nurul Alam ◽  
...  
Keyword(s):  
Submandibular Gland ◽  
Fine Needle Aspiration ◽  
Fine Needle Aspiration Cytology ◽  
False Negative ◽  
Needle Aspiration ◽  
Aspiration Cytology ◽  
Fine Needle ◽  
Medical College ◽  
Preoperative Diagnostic ◽  
Needle Aspiration Cytology

Objective: To evaluate the role of Fine Needle Aspiration Cytology in the preoperative diagnosis of malignancy in parotid and submandibular gland neoplasm. Methods: This cross sectional study on 50 cases was conducted in the Department of Otolaryngology and Head-Neck Surgery of Sir Salimullah Medical College Mitford Hospital and Dhaka Medical College Hospital from January’2009 to June 2010. Results: Fine needle aspiration cytology findings of our all 50 cases were compared with postoperative histopathological reports. Out of the 50 cases, in 36(72%) cases of benign neoplasm and 7(14%) cases of malignant neoplasm, pre-operative FNAC findings and post operative histopathological findings were same. In 7 cases, FNAC and post operative histopathological findings did not matched. These were 2 (4%) false positive and 5 (10%) false negative result.In our study sensitivity of FNAC for reporting malignancy was 58.33%, specificity to rule out malignancy was 94.73% and overall accuracy in detecting malignant tumour was 86%. Positive predictive value and negative value were 77.77% and 87.80% respectively. It can be concluded that fine needle aspiration cytology is a safe, cheap and useful preoperative diagnostic tool in the diagnosis of malignancy in parotid and submandibular gland, but as fine needle aspiration cytology partly depends on operator skill, it may give false negative and false positive result. Conclusion: FNAC is a useful preoperative diagnostic tool for malignant parotid and submandibular glands with high specificity and sensitivity. DOI: http://dx.doi.org/10.3329/bjo.v19i2.17634 Bangladesh J Otorhinolaryngol 2013; 19(2): 110-118

COMPUTED TOMOGRAPHY CORRELATION OF THORACIC LESIONS WITH TRANSTHORACIC FINE NEEDLE ASPIRATION CYTOLOGY AND BIOPSY

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Rajneesh Madhok ◽  
Ashish Gupta ◽  
Lalit Singh ◽  
Tanu Agarwal
Keyword(s):  
Fine Needle Aspiration ◽  
Predictive Value ◽  
Fine Needle Aspiration Cytology ◽  
Needle Aspiration ◽  
Aspiration Cytology ◽  
Ct Guided ◽  
Fine Needle ◽  
Malignant Lesions ◽  
Needle Aspiration Cytology ◽  
Adequate Tissue

INTRODUCTION: The study is an attempt to evaluate the sensitivity, specificity, positive predictive value, negative predictive value, p Value and complications of CT guided thoracic interventions fine needle aspiration cytology and core biopsy which are used for diagnosing benign and malignant thoracic lesions. MATERIAL AND METHODS: Study included 102 Patients (87 males and 15 females) with age group ranged from 15 to 87 years.A total of 143 CT guided interventions (84 FNAC’s and 59 core biopsies) were performed in 102 patients. The tissue obtained was sent to the laboratory for histopathological and cytological analysis for a final diagnosis which would contribute to patient management. RESULTS: All( 59) core biopsies were successful in procuring adequate tissue for histopathological analysis and the yield of core biopsies was 100% .However out of 84 FNAC’s only 4 were unsuccessful in procuring adequate tissue with a failure rate of 4.8%. Post procedural biopsy complications were only three (2.1%) which were small pneumothorax. There were 75 malignant lesions and 23 benign lesions based on cytology and histopathology (4 were excluded due to inadequate sample). There was good agreement between benign and malignant lesions diagnosed on CT and that diagnosed by pathology. The most common benign and malignant lesions were granulomatous lesion and squamous cell carcinoma. CONCLUSION: Percutaneous CT guided interventions like core biopsy and fine needle aspirations cytology are simple minimal invasive procedures with good patient acceptance and low morbidity and almost negligible mortality. CT guided interventions should be performed early for diagnosis of thoracic lesions.

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