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Follicular thyroid

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https://www.readbyqxmd.com/read/28647794/an-update-on-the-risk-of-lymph-node-metastasis-for-the-follicular-variant-of-papillary-thyroid-carcinoma-with-the-new-diagnostic-paradigm
#1
Aleksandra M Sowder, Benjamin L Witt, Jason P Hunt
Previous data has shown that the risk of nodal metastases is significantly greater for classical papillary thyroid carcinoma (PTC) as compared to the follicular variant (FVPTC). Given a recent change in diagnostic paradigm and definition of the noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) we intended to investigate if there remains a significant difference in nodal involvement between classical PTC and FVPTC. A 6-year retrospective review of all cases with FVPTC in the diagnostic line from the University of Utah/ARUP Laboratories was conducted...
June 24, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28646742/image-analysis-for-tsh-mrna-in-situ-hybridization-in-pituitary-glands-from-rats-with-thyroid-follicular-cell-hypertrophy-after-treatment-with-three-different-test-compounds
#2
Juergen Funk, Martin Ebeling, Thomas Singer, Christian Landes
The goal of this in situ hybridization and image analysis technique is to study the effects of new pharmacological/chemical entities on the thyroid and pituitary gland in rats, reveal the pathogenesis of thyroid follicular cell hypertrophy and to retrospectively exclude the risk of thyroid tumor development in humans. In the present study, we describe the increase of thyroid-stimulating hormone- (TSH-) beta subunit mRNA in the pars distalis of the pituitary gland and the quantitative measurement of TSH mRNA positive cells from rats of three 4-week toxicity studies treated with three different test compounds inducing thyroid follicular cell and hepatocellular hypertrophy in rats...
June 11, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28646474/correlation-between-braf-v600e-mutation-and-clinicopathological-features-in-pediatric-papillary-thyroid-carcinoma
#3
Jiangqiao Geng, Huanmin Wang, Yuanhu Liu, Jun Tai, Yaqiong Jin, Jie Zhang, Lejian He, Libing Fu, Hong Qin, Yingluan Song, Jinzhu Su, Aiying Zhang, Xin Wen, Yongli Guo, Xin Ni
In adults, the presence of the BRAF (V600E) mutation in papillary thyroid cancer (PTC) has been demonstrated to be strongly associated with aggressive cancer-cell characteristics and poor patient prognosis. In contrast, the frequency of this mutation in pediatric PTC has undergone limited study, and the few available estimates range from 0 to 63%. Furthermore, the role of the BRAF (V600E) mutation in pediatric PTC is controversial; thus, the present study aimed to investigate the prevalence and role of the BRAF (V600E) mutation in 48 pediatric patients with PTC, aged 3-13 years...
June 15, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28644684/c-cell-and-follicular-epithelial-cell-precursor-lesions-of-the-thyroid
#4
Theresa Scognamiglio
CONTEXT: - The identification of precursor or dysplastic lesions in the thyroid is difficult. Pathology of the C cell has been extensively studied, and the preneoplastic nature of C-cell hyperplasia in the setting of familial medullary thyroid carcinomas is well established. However, the distinction between neoplastic and physiologic/reactive C-cell hyperplasia remains a challenge. Unlike C cells, the existence of a precursor lesion of follicular cell-derived tumors is less well established, and a dysplastic or preneoplastic follicular lesion has not been well defined...
June 23, 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28639967/ras-positive-thyroid-nodules
#5
Trevor E Angell
PURPOSE OF REVIEW: The current review focuses on the uncertainty regarding the management of rat sarcoma viral oncogene homolog RAS-positive thyroid nodules. The application of oncogene testing has been heralded for improving risk assessment for indeterminate cytology thyroid nodules and has grown in clinical use. RAS mutations are historically considered oncogenic. However, RAS mutation detection in thyroid nodules has proven problematic, as these mutations are found in benign and malignant lesions...
July 20, 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/28639242/accuracy-of-fine-needle-cytology-in-histological-prediction-of-papillary-thyroid-carcinoma-variants-a-prospective-study
#6
Anna Cipolletta Campanile, Maria Gabriella Malzone, Nunzia Simona Losito, Gerardo Botti, Maria Grazia Chiofalo, Antongiulio Faggiano, Roberta Siciliano, Annamaria Colao, Luciano Pezzullo, Franco Fulciniti
Fine needle cytology (FNC) is a crucial procedure in the preoperative diagnosis of thyroid tumors. Papillary thyroid carcinoma (PTC), in its classic variant (cPTC), is the most common malignant neoplasm of the thyroid. Several histological variants of PTC have been described, each one with its own characteristics and prognosis. The ability of FNC to identify the variants represents a challenge even for a skilled pathologist. The aim of this study was to evaluate the diagnostic cytological accuracy of FNC in PTC and to look for specific features that could predict the different variants...
June 21, 2017: Endocrine Pathology
https://www.readbyqxmd.com/read/28636557/surgical-management-for-follicular-variant-of-papillary-thyroid-carcinoma
#7
Jianing Tang, Deguang Kong, Lupin Bu, Gaosong Wu
BACKGROUND AND AIMS: For most patients with follicular variant of papillary thyroid carcinoma (FVPTC), surgery is required, while the surgical management remains controversial. We aim to further understanding of treatment of FVPTC and to determine whether specific features could be identified for the decision of surgical strategy. MATERIALS AND METHODS: Data were obtained from the Surveillance, Epidemiology, and End Results (SEER) Program database during 2003 and 2013...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28635633/new-insights-in-thyroid-cancer-and-p53-family-proteins
#8
REVIEW
Livia Manzella, Stefania Stella, Maria Stella Pennisi, Elena Tirrò, Michele Massimino, Chiara Romano, Adriana Puma, Martina Tavarelli, Paolo Vigneri
Thyroid cancers are common endocrine malignancies that comprise tumors with different clinical and histological features. Indeed, papillary and follicular thyroid cancers are slow-growing, well-differentiated tumors, whereas anaplastic thyroid cancers are undifferentiated neoplasias that behave much more aggressively. Well-differentiated thyroid carcinomas are efficiently cured by surgery and radioiodine, unlike undifferentiated tumors that fail to uptake radioactive iodine and are usually resistant to chemotherapy...
June 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28634271/development-of-the-thyroid-gland
#9
REVIEW
Mikael Nilsson, Henrik Fagman
Thyroid hormones are crucial for organismal development and homeostasis. In humans, untreated congenital hypothyroidism due to thyroid agenesis inevitably leads to cretinism, which comprises irreversible brain dysfunction and dwarfism. Elucidating how the thyroid gland - the only source of thyroid hormones in the body - develops is thus key for understanding and treating thyroid dysgenesis, and for generating thyroid cells in vitro that might be used for cell-based therapies. Here, we review the principal mechanisms involved in thyroid organogenesis and functional differentiation, highlighting how the thyroid forerunner evolved from the endostyle in protochordates to the endocrine gland found in vertebrates...
June 15, 2017: Development
https://www.readbyqxmd.com/read/28631629/poorly-differentiated-thyroid-carcinoma-a-hospital-based-clinicopathological-study-and-review-of-literature
#10
Thin Thin Win, Nor Hayati Othman, Irfan Mohamad
INTRODUCTION: Poorly differentiated thyroid carcinoma (PDTC) is a rare aggressive malignancy of thyroid follicular cells and has unique features in morphology and behavior. This study was aimed to describe the experience of a tertiary medical center with PDTC within a 10-year period. MATERIALS AND METHODS: This is a descriptive retrospective study of eight cases of PDTC among 418 various thyroid carcinomas. All cases of PDTC were retrieved along with the clinicopathological information...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28631628/the-absence-of-cd56-expression-can-differentiate-papillary-thyroid-carcinoma-from-other-thyroid-lesions
#11
Ioana Golu, Mihaela Maria Vlad, Alis Dema, Lavinia Cristina Moleriu, Anca Tudor, Mihaela Iacob, Oana Popa, Marioara Cornianu
CONTEXT: The neural cell adhesion molecule CD56 is an antigen important for the differentiation of the follicular epithelium. Recent studies have reported low or absent expression of CD56 in papillary thyroid carcinoma (PTC) and its presence in normal thyroid tissue, benign thyroid lesions, and most follicular non-PTC tumors. AIM: We wish to estimate the value of CD56 in the differentiation of PTC (including follicular variant-PTC [FV-PTC]) from other nontumoral lesions and follicular thyroid neoplasias...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28630022/lamprey-metamorphosis-thyroid-hormone-signaling-in-a-basal-vertebrate
#12
REVIEW
Richard G Manzon, Lori A Manzon
As one of the most basal living vertebrates, lampreys represent an excellent model system to study the evolution of thyroid hormone (TH) signaling. The lamprey hypothalamic-pituitary-thyroid and reproductive axes overlap functionally. Lampreys have 3 gonadotropin releasing hormones and a single glycoprotein hormone from the hypothalamus and pituitary, respectively, that regulate both the reproductive and thyroid axes. TH synthesis in larval lampreys takes place in an endostyle that transforms into typical vertebrate thyroid tissue during metamorphosis; both the endostyle and follicular tissue have all the typical TH synthetic components found in other vertebrates...
June 16, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28629126/differentiated-thyroid-cancer-treatment-state-of-the-art
#13
REVIEW
Benedikt Schmidbauer, Karin Menhart, Dirk Hellwig, Jirka Grosse
Differentiated thyroid cancer (DTC) is a rare malignant disease, although its incidence has increased over the last few decades. It derives from follicular thyroid cells. Generally speaking, the prognosis is excellent. If treatment according to the current guidelines is given, cases of recurrence or persistence are rare. DTC requires special expertise by the treating physician. In recent years, new therapeutic options for these patients have become available. For this article we performed a systematic literature review with special focus on the guidelines of the American Thyroid Association, the European Association of Nuclear Medicine, and the German Society of Nuclear Medicine...
June 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28621914/distinguishing-parathyroid-and-thyroid-lesions-on-ultrasound-guided-fine-needle-aspiration-a-correlation-of-clinical-data-ancillary-studies-and-molecular-analysis
#14
Margaret Cho, Thaira Oweity, Tamar C Brandler, Karen Fried, Pascale Levine
BACKGROUND: Differentiating parathyroid and thyroid lesions can be challenging because of considerable morphologic overlap and anatomic proximity. Therefore, the authors sought to identify characteristic morphologic patterns and useful adjunct tests to distinguish these 2 entities. METHODS: A search was conducted in the study institution database for clinically indeterminate thyroid nodules from 2000 through 2016 with an emphasis on confirmed parathyroid nodules...
June 16, 2017: Cancer
https://www.readbyqxmd.com/read/28621837/pediatric-follicular-thyroid-carcinoma-indolent-cancer-with-low-prevalence-of-ras-mutations-and-absence-of-pax8-pparg-fusion-in-a-japanese-population
#15
Huy Gia Vuong, Tetsuo Kondo, Naoki Oishi, Tadao Nakazawa, Kunio Mochizuki, Akira Miyauchi, Mitsuyoshi Hirokawa, Ryohei Katoh
BACKGROUND: Pediatric follicular thyroid carcinomas are uncommon and their clinicopathological features and molecular profiles are still unknown. In this present study, we aimed to investigate the clinicopathological aspects of a large series of follicular thyroid carcinomas (FTCs) in pediatric patients and to analyse the point mutations in codons 12, 13 and 61 of NRAS, HRAS and KRAS genes and the rearrangements of PAX8-PPARG. METHODS: A total of 41 pediatric FTCs less than 21 years of age were enrolled in the present study...
June 16, 2017: Histopathology
https://www.readbyqxmd.com/read/28618063/papillary-thyroid-carcinoma-expressing-cd20
#16
Yuya Sasaki, Masao Seto, Hiroaki Miyoshi, Shinya Okada, Shintaro Yokoyama, Akira Ohshima, Koichi Ohshima
We identified a case of lymphadenopathy of metastatic papillary thyroid carcinoma (PTC) with CD20 expression, which was also expressed by the primary tumor. CD20 expression was identified using immunohistochemistry (IHC) in metastatic PTC biopsy samples from a 58-year-old woman. CD20 expression was initially determined using a CD20-recognizing L26 clone. To validate this phenomenon, we performed IHC with another antibody that recognizes the N-terminus of CD20 and fluorescent double staining using anti-TTF-1 and anti-CD20 antibodies...
June 15, 2017: Pathology International
https://www.readbyqxmd.com/read/28618022/utility-of-a-formatted-pathologic-reporting-system-in-thyroid-core-needle-biopsy-a-validation-study-of-1998-consecutive-cases
#17
Ji-Young Choe, Yoonjin Kwak, Mimi Kim, Yul Ri Chung, Hyun Jeong Kim, Yeo Koon Kim, So Yeon Park
OBJECTIVE: Thyroid core needle biopsy (CNB) is increasingly being used as a tool for evaluating thyroid nodules; thus, standardization of its diagnostic terminology is called for. We aimed to analyze the pathologic reporting system of thyroid CNB based on the recently proposed protocol by the Korean Endocrine Pathology Thyroid Core Needle Biopsy Study Group and evaluate its usefulness. DESIGN/METHODS: 1998 consecutive cases of thyroid CNBs were reviewed and divided into 6 categories according to the protocol...
June 15, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28615984/papillary-thyroid-microcarcinoma-arising-within-a-mature-ovarian-teratoma-case-report-and-review-of-the-literature
#18
Maria M Pineyro, Jimena Pereda, Pamela Schou, Karina de Los Santos, Soledad de la Peña, Benedicta Caserta, Raul Pisabarro
Mature cystic teratoma is the most common kind of ovarian germ cell tumor. Malignant transformation is uncommon, with thyroid cancer rarely found. Papillary thyroid microcarcinoma has rarely been described as associated with ovarian teratomas. We report a case of a 34-year-old woman who presented with abdominal pain and an ovarian mass. After surgery, the patient was diagnosed with a follicular variant papillary thyroid microcarcinoma that arose within a mature cystic ovarian teratoma. Based on the small size of the primary lesion and patient preferences, no further treatment was performed...
2017: Clinical Medicine Insights. Endocrinology and Diabetes
https://www.readbyqxmd.com/read/28614134/value-of-99mtc-mibi-spect-ct-parathyroid-imaging-and-ultrasonography-for-concomitant-thyroid-carcinoma
#19
Rui Guo, Jiqiu Wang, Min Zhang, Miao Zhang, Hongping Meng, Yifan Zhang, Biao Li
PURPOSE: We aimed to assess the frequency of carcinoma in cases with suspected parathyroid adenoma and test the value of Tc-methoxyisobutylisonitrile (Tc-MIBI) single-photon emission computed tomography/computed tomography (SPECT/CT) parathyroid imaging and neck ultrasonography in detecting concomitant thyroid carcinoma. PATIENTS AND METHODS: We enrolled 741 patients with clinically suspected parathyroid adenoma who underwent Tc-MIBI planer scans and SPECT/CT of the skull base, neck, and thorax; patients also underwent ultrasonography within 1 month before SPECT/CT...
June 13, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28612612/-molecular-aspects-of-thyroid-tumors-with-emphasis-on-microrna-and-their-clinical-implications
#20
M Ludvíková, I Kholová, D Kalfeřt
BACKGROUND: Central to neoplastic transformation and tumor progression is alteration of the signaling pathways that control cell proliferation and apoptosis. The key mechanisms for this neoplastic process are genetic changes (mutations of cancer-related genes) and recently identified epigenetic changes that involve DNA methylation, chromatin remodeling (which has a profound effect on the control of gene expression), and noncoding, regulatory RNA (notably, microRNA - miRNA). MiRNAs control expression of their target gene post-transcriptionally...
2017: Klinická Onkologie: Casopis Ceské a Slovenské Onkologické Spolecnosti
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