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https://www.readbyqxmd.com/read/28441803/-factors-for-lymph-node-metastasis-and-survival-rate-in-papillary-thyroid-microcarcinoma-from-a-large-cohort-of-3-607-cases-series
#1
L Xu, Y N Xu, J D Wang
Objective: To investigate high-risk factors for lymph node metastasis (LNM) and 10-year survival rate in patients with papillary thyroid microcarcinoma (PTMC). Methods: We retrospectively analyzed the clinical data of 3 607 patients with PTMC received surgery in our hospital from January 2005 to December 2015. Univariate and multivariate analyses were performed to identify the factors associated with metastasis and 10-year survival rate of the patients was calculated. Results: The patients accepted an average follow-up of 68 months, with follow-up from 18 to 138 months...
April 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28432268/clinical-outcomes-after-delayed-thyroid-surgery-in-patients-with-papillary-thyroid-microcarcinoma
#2
Min Ji Jeon, Won Gu Kim, Hyemi Kwon, Mijin Kim, Suyeon Park, Hye-Seon Oh, Minkyu Han, Tae-Yon Sung, Ki-Wook Chung, Suck Joon Hong, Tae Yong Kim, Young-Kee Shong, Won Bae Kim
OBJECTIVE: Active surveillance is an option for patients with papillary thyroid microcarcinoma (PTMC). However, the long-term clinical outcomes after delayed surgery remain unclear. We compared the long-term clinical outcomes of PTMC patients according to the time interval between initial diagnosis and surgery. DESIGN & METHODS: In this individual risk factor-matched cohort study, PTMC patients were classified into three groups according to the delay period: ≤ 6 months, 6-12 months, and > 12 months...
April 21, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28419171/ultrasound-texture-analysis-association-with-lymph-node-metastasis-of-papillary-thyroid-microcarcinoma
#3
Soo-Yeon Kim, Eunjung Lee, Se Jin Nam, Eun-Kyung Kim, Hee Jung Moon, Jung Hyun Yoon, Kyung Hwa Han, Jin Young Kwak
This retrospective study aimed to evaluate whether ultrasound texture analysis is useful to predict lymph node metastasis in patients with papillary thyroid microcarcinoma (PTMC). This study was approved by the Institutional Review Board, and the need to obtain informed consent was waived. Between May and July 2013, 361 patients (mean age, 43.8 ± 11.3 years; range, 16-72 years) who underwent staging ultrasound (US) and subsequent thyroidectomy for conventional PTMC ≤ 10 mm between May and July 2013 were included...
2017: PloS One
https://www.readbyqxmd.com/read/28402967/surface-curvature-in-triply-periodic-minimal-surface-architectures-as-a-distinct-design-parameter-in-preparing-advanced-tissue-engineering-scaffolds
#4
Sébastien B G Blanquer, Maike Werner, Markus Hannula, Shahriar Sharifi, Guillaume P R Lajoinie, David Eglin, Jari Hyttinen, André A Poot, Dirk W Grijpma
Reproduction of the anatomical structures and functions of tissues using cells and designed 3D scaffolds is an ongoing challenge. For this, scaffolds with appropriate biomorphic surfaces promoting cell attachment, proliferation and differentiation are needed. In this study, eight triply-periodic minimal surface (TPMS)-based scaffolds were designed using specific trigonometric equations, providing the same porosity and the same number of unit cells, while presenting different surface curvatures. The scaffolds were fabricated by stereolithography using a photocurable resin based on the biocompatible, biodegradable and rubber-like material, poly(trimethylene carbonate) (PTMC)...
April 12, 2017: Biofabrication
https://www.readbyqxmd.com/read/28382784/the-impact-of-presence-of-hashimoto-s-thyroiditis-on-diagnostic-accuracy-of-ultrasound-guided-fine-needle-aspiration-biopsy-in-subcentimeter-thyroid-nodules-a-retrospective-study-from-fuscc
#5
Lili Gao, Ben Ma, Li Zhou, Yu Wang, Shuwen Yang, Ning Qu, Yi Gao, Qinghai Ji
The incidence of PTMC has been increasing in the recent years. This study aimed to investigate the diagnostic value of US-FNA in thyroid nodules ≤1 cm and whether the presence of Hashimoto's thyroiditis (HT) in thyroid could influence the accuracy. The patients who accepted US-FNA at FUSCC from December 2012 to November 2015 and followed our criteria were enrolled in this study. We extracted the cytological, pathological, and follow-up US/US-FNA data of patients with subcentimeter nodules. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), false-negative rate (FNR), false-positive rate (FPR), and AUC were calculated to define FNA diagnostic performance in patients...
April 5, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28351086/independent-risk-factors-predicting-central-lymph-node-metastasis-in-papillary-thyroid-microcarcinoma
#6
Xiaolong Yu, Xuejia Song, Wenhai Sun, Shihua Zhao, Jiajun Zhao, Yan-Gang Wang
The incidence of papillary thyroid microcarcinoma (PTMC) has risen rapidly in recent years, and PTMC patients with central lymph node metastasis (CLNM) usually have poor prognosis. Independent risk factors predicting CLNM in PTMC have not been well understood. The aim of our study was to identify useful clinicopathological risk factors predicting CLNM in PTMC patients. This was a retrospective study of 917 patients with PTMC treated with surgery from January 2014 to December 2015 in our hospital. The relationship between clinicopathological factors and CLNM was analyzed to identify those factors predicting CLNM in PTMC...
March 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28324106/clinical-features-of-early-and-late-postoperative-hypothyroidism-after-lobectomy
#7
Suyeon Park, Min Ji Jeon, Eyun Song, Hye-Seon Oh, Mijin Kim, Hyemi Kwon, Tae Yong Kim, Suck Joon Hong, Young Kee Shong, Won Bae Kim, Tae-Yon Sung, Won Gu Kim
Context: Lobectomy is preferred in thyroid cancer to decrease surgical complications and avoid lifelong thyroid-hormone replacement. However, postoperative hypothyroidism, requiring thyroid-hormone replacement, may occur. Objective: We aimed to identify the incidence and risk factors of postoperative hypothyroidism to develop a surveillance strategy after lobectomy for papillary thyroid microcarcinoma (PTMC). Methods: This historical cohort study involved 335 patients with PTMC treated by lobectomy...
April 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323932/active-surveillance-for-patients-with-papillary-thyroid-microcarcinoma-a-single-center-s-experience-in-korea
#8
Hyemi Kwon, Hye-Seon Oh, Mijin Kim, Suyeon Park, Min Ji Jeon, Won Gu Kim, Won Bae Kim, Young Kee Shong, Dong Eun Song, Jung Hwan Baek, Ki-Wook Chung, Tae Yong Kim
Context: Papillary thyroid microcarcinoma (PTMC) usually has an excellent prognosis. Objective: To evaluate the 3-dimensional structures of PTMCs using serial neck ultrasonography (US) in patients under active surveillance. Design and Setting: A retrospective cohort study. Participants: In total, 192 patients diagnosed with PTMC under active surveillance for more than 1 year were included in a median 30-month follow-up...
March 3, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28289666/is-familial-papillary-thyroid-microcarcinoma-more-aggressive-than-sporadic-form
#9
Cho Rok Lee, Seulkee Park, Sang-Wook Kang, Jandee Lee, Jong Ju Jeong, Kee-Hyun Nam, Woong Youn Chung, Cheong Soo Park
PURPOSE: With the increasing incidence of papillary thyroid microcarcinoma (PTMC), familial papillary thyroid microcarcinoma (FPTMC) is now recognized more frequently. However, the biological behavior of FPTMC is poorly understood. The aim of this study was to investigate the prevalence of FPTMC and its biological aggressiveness. METHODS: Between March 2006 and July 2010, 2,414 patients underwent primary surgical therapy for PTMC and 149 (6.2%) were further classified as FPTMC...
March 2017: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/28286037/surface-enrichment-with-hydroxyapatite-nanoparticles-in-stereolithography-fabricated-composite-polymer-scaffolds-promotes-bone-repair
#10
O Guillaume, M A Geven, C M Sprecher, V A Stadelmann, D W Grijpma, T T Tang, L Qin, Y Lai, M Alini, J D de Bruijn, H Yuan, R G Richards, D Eglin
Fabrication of composite scaffolds using stereolithography (SLA) for bone tissue engineering has shown great promises. However, in order to trigger effective bone formation and implant integration, exogenous growth factors are commonly combined to scaffold materials. In this study, we fabricated biodegradable composite scaffolds using SLA and endowed them with osteopromotive properties in the absence of biologics. First we prepared photo-crosslinkable poly(trimethylene carbonate) (PTMC) resins containing 20 and 40 wt...
March 7, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28273370/features-of-papillary-thyroid-microcarcinoma-associated-with-lateral-cervical-lymph-node-metastasis
#11
Min Ji Jeon, Mi Sun Chung, Hyemi Kwon, Mijin Kim, Suyeon Park, Jung Hwan Baek, Dong Eun Song, Tae-Yon Sung, Suck Joon Hong, Tae Yong Kim, Won Bae Kim, Young Kee Shong, Jeong Hyun Lee, Won Gu Kim
OBJECTIVES: Papillary thyroid microcarcinoma (PTMC) has an excellent prognosis with an indolent disease course. However, some PTMCs have an aggressive course with lateral cervical lymph node (LCLN) metastasis or distant metastasis. This study aimed to evaluate the pre-operative features of PTMC associated with LCLN metastasis. DESIGN AND PATIENTS: This retrospective cohort study with a nested, matched case-control design included 199 PTMC patients with LCLN metastasis at initial surgery (N1b group) and 196 PTMC patients without any LN metastasis or persistent disease (N0 NED group) as controls; primary tumour sizes were matched...
March 8, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28272218/preoperative-predictors-of-lateral-neck-lymph-node-metastasis-in-papillary-thyroid-microcarcinoma
#12
Zheng Liu, Jianyong Lei, Yang Liu, Yuxia Fan, Xiaoming Wang, Xiubo Lu
Lateral lymph node metastasis (LNM) is not uncommon in papillary thyroid microcarcinoma (PTMC). Our present study aimed to investigate the risk factors associated with lateral LNM in PTMC.We retrospectively collected data pertaining to 366 patients with PTMC who underwent surgery at our center from 2010 to 2015. These patients were divided into the following 2 groups: a lateral LNM-positive group and a lateral LNM-negative group. Clinical and ultrasound data were compared between the 2 groups to determine the risk factors associated with lateral LNM...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28243084/efficient-induction-of-antimicrobial-activity-with-vancomycin-nanoparticle-loaded-poly-trimethylene-carbonate-localized-drug-delivery-system
#13
Yang Zhang, Ruo-Jia Liang, Jiao-Jiao Xu, Li-Feng Shen, Jian-Qing Gao, Xu-Ping Wang, Na-Ni Wang, Dan Shou, Ying Hu
Surgery and the local placement of an antibiotic are the predominant therapies to treat chronic osteomyelitis. Vancomycin-loaded N-trimethyl chitosan nanoparticles (VCM/TMC NPs) as a potential drug delivery system have high intracellular penetration and effective intracellular antibacterial activity. This study investigated the effects of a biocompatible material, poly(trimethylene carbonate) (PTMC), to increase the sustained effectiveness of an intracellular antibiotic and its potential application in antibiotic delivery...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28201917/parallel-tempering-monte-carlo-combined-with-clustering-euclidean-metric-analysis-to-study-the-thermodynamic-stability-of-lennard-jones-nanoclusters
#14
Henrique M Cezar, Gustavo G Rondina, Juarez L F Da Silva
A basic requirement for an atom-level understanding of nanoclusters is the knowledge of their atomic structure. This understanding is incomplete if it does not take into account temperature effects, which play a crucial role in phase transitions and changes in the overall stability of the particles. Finite size particles present intricate potential energy surfaces, and rigorous descriptions of temperature effects are best achieved by exploiting extended ensemble algorithms, such as the Parallel Tempering Monte Carlo (PTMC)...
February 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28194993/preoperative-prediction-of-papillary-thyroid-microcarcinoma-via-multiparameter-ultrasound
#15
Hui Juan Ma, Jing Chun Yang, Zhen Peng Leng, Ying Chang, Hua Kang, Liang Hong Teng
Background Accurate diagnosis of papillary thyroid microcarcinoma (PTMC) is important for further management. Ultrasound (US) is the most frequently used imaging modality for PTMC. Purpose To evaluate the diagnostic value of conventional US, contrast-enhanced ultrasound (CEUS) and real-time elastography (RTE) for patients with PTMC. Material and Methods In total, 135 patients with subcentimeter thyroid nodules who underwent conventional US, CEUS, and RTE before surgery were enrolled. A multivariate logistic regression analysis was performed to assess the independent predictors of PTMC...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28165584/triblock-copolymers-based-on-%C3%AE%C2%B5-caprolactone-and-trimethylene-carbonate-for-the-3d-printing-of-tissue-engineering-scaffolds
#16
Aysun Güney, Jos Malda, Wouter J A Dhert, Dirk W Grijpma
BACKGROUND: Biodegradable PCL-b-PTMC-b-PCL triblock copolymers based on trimethylene carbonate (TMC) and ε-caprolactone (CL) were prepared and used in the 3D printing of tissue engineering scaffolds. Triblock copolymers of various molecular weights containing equal amounts of TMC and CL were prepared. These block copolymers combine the low glass transition temperature of amorphous PTMC (approximately -20°C) and the semi-crystallinity of PCL (glass transition approximately -60°C and melting temperature approximately 60°C)...
February 1, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28156153/should-multifocal-papillary-thyroid-carcinomas-classified-as-t1a-having-the-sum-of-tumor-diameters-1-2-centimeter-be-reclassified-as-t1b
#17
Abbas Ali Tam, Didem Ozdemir, Berna Evranos Ogmen, Sevgul Fakı, Ersin Gurkan Dumlu, Aylin Kılıc Yazgan, Reyhan Ersoy, Bekir Cakır
OBJECTIVE: Considering the diameter of the largest tumor while determining T stage in multifocal papillary thyroid microcarcinomas (PTMC) might cause underestimation of tumoral stage. We aimed to investigate the effect of total tumor diameter (TTD) on TNM classification in multifocal T1a PTMCs. METHODS: T1 tumors were grouped as T1a and T1b according to 7th TNM edition. For patients with multifocal T1a, TTD (the sum of the maximal diameter of each foci) was calculated and these patients were further subgrouped as TTD ≤1 cm and TTD 1-2 cm...
February 3, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28130621/is-male-gender-a-prognostic-factor-for-papillary-thyroid-microcarcinoma
#18
Yi Ho Lee, Yu Mi Lee, Tae Yon Sung, Jong Ho Yoon, Dong Eun Song, Tae Yong Kim, Jung Hwan Baek, Jin Suk Ryu, Ki Wook Chung, Suck Joon Hong
BACKGROUND: Male gender is a prognostic factor of poor outcome in papillary thyroid carcinoma (PTC). We investigated the prognostic role of male gender in papillary thyroid microcarcinoma (PTMC). METHODS: We included 2930 patients who underwent surgery at Asan Medical Center for PTC. Clinicopathologic characteristics from the patients' medical records were compared for male and female PTC patients. Independent prognostic factors for recurrence in PTC and PTMC were evaluated after propensity score matching analysis...
January 27, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28125992/diagnostic-accuracy-of-ultrasonographic-features-for-lymph-node-metastasis-in-papillary-thyroid-microcarcinoma-a-single-center-retrospective-study
#19
Zeming Liu, Wen Zeng, Chunping Liu, Shuntao Wang, Yiquan Xiong, Yawen Guo, Xiaoyu Li, Shiran Sun, Tianwen Chen, Yusufu Maimaiti, Pan Yu, Tao Huang
BACKGROUND: Whether sonography is an appropriate imaging modality for cervical lymph nodes in patients with papillary thyroid microcarcinoma (PTMC) remains unclear. Hence, this study aimed to evaluate the diagnostic value of ultrasonography (US) features for lymph node metastasis in PTMC. METHODS: Seven hundred twelve patients with PTMC who underwent conventional ultrasonography examinations of the cervical lymph nodes were included. All included cases underwent total thyroidectomy plus prophylactic central lymph node dissection...
January 26, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28123728/clinicopathological-features-for-predicting-central-and-lateral-lymph-node-metastasis-in-papillary-thyroid-microcarcinoma-analysis-of-66-cases-that-underwent-central-and-lateral-lymph-node-dissection
#20
Yang Tao, Chongjie Wang, Liye Li, Haijun Xing, Yun Bai, Bing Han, Zhiyan Liu, Xiangshan Yang, Shourong Zhu
Currently the surgical approach for papillary thyroid microcarcinoma (PTMC), particularly the range of lymph node dissection, remains controversial. The present study aims to evaluate the risk factors for central and lateral lymph node metastasis (CLNM and LLNM) for appropriate clinical decision of neck lymph node dissection in PTMC. A total of 66 cases of PTMC that underwent unilateral or bilateral lobectomy plus prophylactic cervical lymph node dissection were collected for clinicopathological evaluation, including age, gender, tumor size, subtypes, extrathyroidal invasion, multifocality, calcifications, loss of cellular polarity/cohesiveness (LOP/C) in the invasive front, CLNM and LLNM, and retrospectively analysis...
January 2017: Molecular and Clinical Oncology
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