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Dandan Yi, Peng Song, Tao Huang, Xiaoqiao Tang, Jianfeng Sang
Whether total thyroidectomy reduces the recurrence rate in patients with papillary thyroid microcarcinoma (PTMC) is currently controversy. Conclusions of sporadic, inconsistent, and mono-institutional studies need a meta-analysis to evaluate. 525 relevant studies were obtained from initial search on PubMed, 511 studies were excluded by inclusion and exclusion criteria. Eligible data were extracted from each included study. The Odds ratios (ORs) and 95% confidence interval (CI) were used to assess the difference in the recurrence rates between PTMC patients treated with total thyroidectomy and non-total thyroidectomy...
October 15, 2016: Oncotarget
Lachikarathman Devegowda, Prabhavathi Bhat, Cholenahally Nanjappa Manjunath, Prasanna Simha Mohan Rao
MV repair in the rheumatic population is feasible with acceptable long-term results.(1) Incidence of mitral stenosis (MS) following mitral valve (MV) repair for severe rheumatic mitral regurgitation (MR) and usefulness of percutaneous transluminal mitral valvuloplasty (PTMC) in these patients is not described in literature. We report a case of successful PTMC in severe MS following MV repair for severe rheumatic MR.
September 2016: Indian Heart Journal
Xuemei Gao, Xiao Zhang, Yajing Zhang, Wenjuan Hua, Yusufu Maimaiti, Zairong Gao
The increasing detection of papillary thyroid microcarcinoma (PTMC) has created management dilemmas. To clarify the clinical significance of postsurgery stimulated thyroglobulin (ps-Tg) in PTMC who undergo thyroidectomy and radioactive iodine (RAI), we retrospectively reviewed the 358 PTMC patients who were treated with RAI and followed up in our hospital. Those with an excessive anti-Tg antibody, ultrasound-detected residual were excluded, thereby resulting in the inclusion of 280 cases. Their clinical and histopathological information and clinical outcomes were collected and summarized...
October 2016: Medicine (Baltimore)
Bo Li, Yaqiong Zhang, Ping Yin, Jian Zhou, Tian'an Jiang
The present study aimed to investigate the value of ultrasonography in the diagnosis of papillary thyroid microcarcinoma (PTMC) coexisting with a thyroid abnormality, and to improve the accuracy of PTMC diagnosis. The ultrasonic features of 38 PTMC nodules coexisting with a thyroid abnormality and 56 thyroid benign nodules, obtained by surgical resection and confirmed by pathological analysis, were retrospectively analyzed. All masses were ≤ 1.0 cm in diameter. Ultrasonic features that were analyzed included the shape, aspect ratio, boundary, margin, echo, uniformity, presence or absence of microcalcification and enlargement of the lymph nodes, as well as the blood flow of the nodules...
October 2016: Oncology Letters
Liang-Sen Liu, Jia Liang, Jun-Hong Li, Xue Liu, Li Jiang, Jian-Xiong Long, Yue-Ming Jiang, Zhi-Xiao Wei
Although there have been many studies identifying clinical and pathologic factors that may predict central lymph node metastases (CLNM) in papillary thyroid microcarcinoma (PTMC) patients without clinically cervical lymph node metastasis (cN0), the results were inconsistent. And whether prophylactic central lymph node dissection (pCLND) should be performed in cN0 PTMC remains controversial. The EMBASE, PubMed, MEDLINE and the Cochrane Library were searched until Oct 2015 to identify relevant studies. Primary outcomes were clinical and pathologic factors for CLNM...
September 19, 2016: European Archives of Oto-rhino-laryngology
Elise Vene, Ghislaine Barouti, Kathleen Jarnouen, Thomas Gicquel, Claudine Rauch, Catherine Ribault, Sophie M Guillaume, Sandrine Cammas-Marion, Pascal Loyer
The present work reports the investigation of the biocompatibility, opsonisation and cell uptake by human primary macrophages and HepaRG cells of nanoparticles (NPs) formulated from poly(β-malic acid)-b-poly(β-hydroxybutyrate) (PMLA-b-PHB) and poly(β-malic acid)-b-poly(trimethylene carbonate) (PMLA-b-PTMC) diblock copolymers, namely PMLA800-b-PHB7300, PMLA4500-b-PHB4400, PMLA2500-b-PTMC2800 and PMLA4300-b-PTMC1400. NPs derived from PMLA-b-PHB and PMLA-b-PTMC do not trigger lactate dehydrogenase release and do not activate the secretion of pro-inflammatory cytokines demonstrating the excellent biocompatibility of these copolymers derived nano-objects...
September 15, 2016: International Journal of Pharmaceutics
Dao-Zhe Lin, Ning Qu, Rong-Liang Shi, Zhong-Wu Lu, Qing-Hai Ji, Wei-Li Wu
The surgical management of papillary thyroid microcarcinoma (PTMC), especially regarding the necessity of central/lateral lymph node dissection, remains controversial. This study investigated the clinicopathologic factors predictive of lymph node metastasis (LNM) in patients diagnosed with PTMC. Multivariate logistic regression analysis was used for PTMC patients identified from the Surveillance, Epidemiology, and End Results database who were treated by surgery between 2002 and 2012, to determine the association of clinicopathologic factors with LNM...
2016: OncoTargets and Therapy
Liao-Bin Dong, Jeffrey D Rudolf, Ben Shen
Inactivation of ptmB1, ptmB2, ptmT2, or ptmC in Streptomyces platensis SB12029, a platensimycin (PTM) and platencin (PTN) overproducer, revealed that PTM and PTN biosynthesis features two distinct moieties that are individually constructed and convergently coupled to afford PTM and PTN. A focused library of PTM and PTN analogues was generated by mutasynthesis in the ΔptmB1 mutant S. platensis SB12032. Of the 34 aryl variants tested, 18 were incorporated with high titers.
September 16, 2016: Organic Letters
Zeng Gui Wu, Xing Qiang Yan, Ru Si Su, Zhao Sheng Ma, Bo Jian Xie, Fei Lin Cao
BACKGROUND: The decision to perform a total thyroidectomy (TT) for unilateral papillary thyroid microcarcinoma (PTMC) with nodules in the contralateral lobe remains controversial. The aim of this study was to investigate the rate of contralateral carcinomas that are preoperatively misdiagnosed as benign. METHODS: From October 2011 to October 2015, a total of 347 patients with unilateral PTMC and contralateral benign nodules who were treated with a TT at a single institution were enrolled...
August 19, 2016: World Journal of Surgery
Kyohei Nitta, Atsushi Kimoto, Junji Watanabe
A novel hydrogel having hydrophobic oligo segments and hydrophilic poly(acrylamidoglycolic acid) (PAGA) as pH responsive polymer segments was designed and synthesized to be used as a soft biomaterial. Poly(trimethylene carbonate) (PTMC) as the side chain, for which the degrees of polymerization were 9, 19, and 49, and the composition ratios were 1, 5, and 10mol%, was used as the oligo segment in the hydrogel. The swelling ratio of the hydrogel was investigated under various changes in conditions such as pH, temperature, and hydrogen bonding upon urea addition...
November 1, 2016: Materials Science & Engineering. C, Materials for Biological Applications
L Zhang, J Yang, Q Sun, Y Liu, F Liang, Z Liu, G Chen, S Chen, Z Shang, Y Li, X Li
BACKGROUND: Lymph node metastasis (LNM) is an important consideration in treatment strategy selection for papillary thyroid microcarcinoma (PTMC). The aim of this study was to investigate the risk factors for LNM and high-volume LNM (hvLNM, >5 metastatic lymph nodes). METHODS: A consecutive series of 1226 PTMC (947 female, 279 male) patients was reviewed. All patients underwent at least central neck dissection. Clinical-pathological features were assessed. All patients were allocated into Group A (≤39 yrs), Group B (40-59 yrs), or Group C (≥60 yrs) for risk factor analysis...
October 2016: European Journal of Surgical Oncology
Yujie Li, Xiaodong Zhou
BACKGROUND: Endoscopic thyroidectomy (ET) has gained acceptance among surgeons as its feasibility has been well-documented. The aim of this systematic review with meta-analysis has been to assess and validate the safety and feasibility of ET when compared to conventional open thyroidectomy (COT) for papillary thyroid microcarcinoma (PTMC) and to verify other potential benefits and drawbacks. MATERIALS AND METHODS: PubMed, Web of Knowledge are searched for studies concerning treatment for papillary thyroid microcarcinoma between 2000 and 2013, the method of meta-analysis is performed to compare the effect of different treatment...
April 2016: Journal of Cancer Research and Therapeutics
Mingbo Zhang, Yukun Luo, Yan Zhang, Jie Tang
BACKGROUND: Papillary thyroid microcarcinoma (PTMC) has a high incidence and a good prognosis. Surgical operation for all PTMC might be an overtreatment. The objective of our study was to evaluate the efficacy and safety of ultrasound (US)-guided radiofrequency ablation (RFA) for treating low risk PTMC. METHODS: 98 PTMC in 92 patients were included in our study. US and contrast-enhanced ultrasound (CEUS) examinations were performed before ablation. RFA was performed using the moving shot technique...
July 22, 2016: Thyroid: Official Journal of the American Thyroid Association
Doh Young Lee, Soo Min Hwang, Jee Hyun An, Kyu Ri Son, Seung-Kuk Baek, Sin Gon Kim, Yang Seok Chae, Kwang-Yoon Jung
Objectives: The aim of this study was to evaluate the association between preoperative parameters and extrathyroidal extension (ETE) of papillary thyroid microcarcinoma (PTMC) according to the BRAF mutation and to evaluate the preoperative predictability of ETE. Methods: We analyzed the medical records of 332 patients with PTMC (140 in the BRAF- group and 192 in the BRAF+ group). The presence of ETE was subjected to a correlation analysis with age, sex, tumor size, clinical nodal status, and ultrasonography (US) findings...
July 2, 2016: Clinical and Experimental Otorhinolaryngology
Mitsuyoshi Hirokawa, Takumi Kudo, Hisashi Ota, Ayana Suzuki, Akira Miyauchi
Papillary thyroid microcarcinoma (PTMC) is generally an indolent disease and active surveillance is conducted for low-risk cases. This study was carried out to clarify the pathological characteristics of PTMC cases that exhibited enlarged nodules or nodal metastasis during the surveillance period. A total of 188 PTMC cases that underwent surgery after active surveillance for ≥ 1 year were examined. Ki-67 labeling indices of > 5% and > 10% were detected in 50.0% and 22.2% of enlarged cases, respectively, values that were significantly higher than those in non-enlarged cases...
September 30, 2016: Endocrine Journal
Jan J Rongen, Bas van Bochove, Gerjon Hannink, Dirk W Grijpma, Pieter Buma
Photo-crosslinked networks prepared from three-armed methacrylate functionalized PTMC oligomers (PTMC-tMA macromers) are attractive materials for developing an anatomically correct meniscus scaffold. In this study, we evaluated cell specific biocompatibility, in vitro and in vivo degradation behavior of, and tissue response to, such PTMC networks. By evaluating PTMC networks prepared from PTMC-tMA macromers of different molecular weights, we were able to assess the effect of macromer molecular weight on the degradation rate of the PTMC network obtained after photo-crosslinking...
November 2016: Journal of Biomedical Materials Research. Part A
Oğuz Kuşcu, Övsen Önay, Bahar Kayahan, Nilda Süslü, Taner Yılmaz
Papillary thyroid microcarcinoma (PTMC) is defined as a papillary cancer that is 1 cm or less in its maximal diameter. The incidence of thyroid cancer has increased during the past 30 years. The aim of this study is to evaluate the rising incidence of PTMC (papillary thyroid microcarcinoma) and whether is lobectomy enough or not. The data of 462 consecutive patients who underwent thyroidectomy (hemithyroidectomy and total thyroidectomy) at the Hacettepe University Hospitals Department of ENT from 2000 to 2015 were analyzed...
June 30, 2016: Otolaryngologia Polska. the Polish Otolaryngology
Oğuz Kuşcu, Övsen Önay, Bahar Kayahan, Nilda Süslü, Taner Yılmaz
Papillary thyroid microcarcinoma (PTMC) is defined as a papillary cancer that is 1 cm or less in its maximal diameter. The incidence of thyroid cancer has increased during the past 30 years. The aim of this study is to evaluate the rising incidence of PTMC (papillary thyroid microcarcinoma) and whether is lobectomy enough or not. The data of 462 consecutive patients who underwent thyroidectomy (hemithyroidectomy and total thyroidectomy) at the Hacettepe University Hospitals Department of ENT from 2000 to 2015 were analyzed...
2016: Otolaryngologia Polska. the Polish Otolaryngology
Tae Kwun Ha, Dong Wook Kim, Ha Kyoung Park, Jin Wook Baek, Yoo Jin Lee, Young Mi Park, Do Hun Kim, Soo Jin Jung, Ki Jung Ahn
Objective. No previous studies regarding the appropriate timing of thyroid hormone discontinuation after hemithyroidectomy have been published. This study aimed to identify the appropriate timing for levothyroxine discontinuation after hemithyroidectomy among patients with papillary thyroid microcarcinoma (PTMC). Methods. This study retrospectively evaluated 304 patients who underwent ≥1 attempt to discontinue levothyroxine after hemithyroidectomy for treating PTMC between January 2008 and December 2013. Fifty-three patients were excluded because of preoperative hypothyroidism or hyperthyroidism, a history of thyroid hormone or antithyroid therapy, no available serological data, or a postoperative follow-up of <24 months...
2016: International Journal of Endocrinology
Jin-Woo Park, Jae-Soo Yoo, Jin-Kyung Yun, Byoung-Hoon Kim, Yeon-Woo Noh, Dong-Ju Kim
PURPOSE: An optimal timing for diagnosis and management of papillary thyroid microcarcinoma (PTMC) has become the subject for much controversy. The aim of the present study is to analyze people's preference in Korea for timing of diagnosis and management of PTMC using an online questionnaire. METHODS: The questionnaire consists of 3 questions about preference for the diagnosis and management of PTMC and 3 additional questions about respondents' personal information...
June 2016: Annals of Surgical Treatment and Research
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