Faculty Opinions recommendation of Molecular Testing for miRNA, mRNA, and DNA on Fine-Needle Aspiration Improves the Preoperative Diagnosis of Thyroid Nodules With Indeterminate Cytology.

Author(s):  
Bernard Corvilain
2019 ◽  
Vol 47 (9) ◽  
pp. 853-862 ◽  
Author(s):  
Kristen L. Partyka ◽  
Karen Trevino ◽  
Melissa L. Randolph ◽  
Harvey Cramer ◽  
Howard H. Wu

2021 ◽  
Vol 3 (5) ◽  
pp. 01-03
Author(s):  
Smaroula Divani

Objective: Although fine needle aspiration cytology (FNAC) is the most reliable, safe and accurate method for the clinical management of abnormal thyroid nodules, 5%-15% of cases lead to indeterminate diagnoses and surgery is the recommended practice for them as they may be malignant. Nevertheless, the majority of cases with indeterminate cytology are benign, so the risk of unnecessary surgery is significant. In our study we combined FNAC and scintigraphy in order to reduce the number of inappropriate surgeries. Subjects and Methods: From 219 patients with thyroid fine needle aspiration cytology 33(9 males and 24 females) aged 18-73 years, had indeterminate FNAC diagnoses and were referred for scintigraphy. Surgery was performed in all cases. The results of FNAC, scintigraphy and histology were collected and compared. Results: From 33 cases with indeterminate cytology 32 had a benign histological diagnosis and only one was malignant (follicular Ca). That case had a positive scan. All cases with negative thyroid scans (29/33) were benign. False positive scans were 3, whereas one scan was true positive with final diagnosis follicular carcinoma. Conclusion: This study showed that combining the FNAC with the thyroid scintigraphy in cases of thyroid nodules with indeterminate cytology it is possible to reduce the number of inappropriate surgeries from 32 to 3.


Genes ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 736 ◽  
Author(s):  
Esther Diana Rossi ◽  
Liron Pantanowitz ◽  
William C. Faquin

Thyroid nodules are common in the adult population where a majority are benign and only 4.0% to 6.5% are malignant. Fine needle aspiration (FNA) is a key method used in the early stages to evaluate and triage patients with thyroid nodules. While a definitive cytological diagnosis is provided in more than 70–75% of all thyroid FNA cases, the group of indeterminate lesions offers a challenge in terms of interpretation and clinical management. Molecular testing platforms have been developed, are recognized as an option by the 2015 American Thyroid Association Guidelines, and are frequently used in conjunction with FNA as an integral part of the cytologic evaluation. In this review, the utility of molecular testing options for nodules assigned to the group of indeterminate thyroid FNAs is described.


2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Hui-qin Guo ◽  
Huan Zhao ◽  
Zhi-hui Zhang ◽  
Yan-li Zhu ◽  
Ting Xiao ◽  
...  

Background. The molecular work-up of thyroid nodules from fine needle aspiration samples has given clinicians a new level of diagnostic information. The aim of the present study was to evaluate the utility of molecular analysis in thyroid fine needle aspiration samples from a Chinese population.Methods. Specimens were collected from thyroid nodules by fine needle aspiration. Cytology diagnosis and genes analysis were performed and correlated with histology outcome.Results. A total of 83 patients with thyroid nodules were enrolled, including 20 benign lesions and 63 papillary carcinomas. BRAF and RAS mutations and RET/PTC gene rearrangements were found in 65.1%, 0%, and 1.6% of papillary carcinomas, respectively. No gene alterations were found in benign lesions. The combination of BRAF testing and cytology improved the accuracy of cytology from 69.9% to 89.2%(P<0.05). Moreover, BRAF testing confirmed 82.4% of papillary carcinomas with suspicious cytology and identified 33.3% of papillary carcinomas with atypia cytology.Conclusions. Of the three candidate markers, BRAF testing showed diagnostic utility in fine needle aspiration. Combining BRAF testing with cytology improves the accuracy of fine needle biopsy. Those who have positive BRAF and malignant or suspicious malignant cytology can undergo thyroidectomy without a frozen section.


2010 ◽  
Vol 17 (1-2) ◽  
pp. 35-39
Author(s):  
Svetlana V. MANKOVSKAYA ◽  
Yuri E. DEMIDCHIK ◽  
Shunichi YAMASHITA

Background. The diagnostic efficacy of the molecular analysis that included determination of papillary thyroid carcinoma (PTC) marker gene expression levels and BRAF mutation in fine-needle aspiration biopsy material was evaluated in a prospective study of patients with thyroid nodules. Materials and methods. Totally, 36 patients (29 females and 7 males) with thyroid nodules were included in the study. The mRNA expression of genes (SFTPB and TFF3) was estimated in relation to a housekeeping gene level (KPNA4) by means of duplex RT-PCR followed by the band intensity measurement. Detection of BRAF mutation was performed by PCR followed by direct sequencing. Results. In 25/32 (78.1%) cases, results of the molecular test were in agreement with the cytological diagnosis (7/7 PTC and 18/25 non-PTC) further confirmed by histological examination of tissues surgically removed from all seven PTC patients and 10 individuals with benign nodules. In 7/32 patients (21.9%) there was a discrepancy between cytological findings and molecular results, which revealed a benign nodule and a PTC-like pattern, respectively. Upon a repeated examination of five of these patients about one year later, three were cytologically diagnosed with PTC (all patients had been operated on), and the diagnosis of the other two patients remained unchanged. Conclusions. The results have demonstrated that the molecular analysis of FNAB material is an informative means of the preoperative diagnosis of thyroid nodules as it allows identification of patients with suspected PTC before other diagnostically significant changes take place. Keywords: papillary thyroid carcinoma, fine-needle aspiration biopsy, preoperative diagnosis, molecular test


Sign in / Sign up

Export Citation Format

Share Document