Publications by authors named "Ruochuan Cheng"

Objective: To explore individualized treatment and management methods for medullary thyroid microcarcinoma (MTMC).

Methods: Clinical data of patients with medullary thyroid carcinoma with a diameter ≤1 cm admitted to the First Affiliated Hospital of Kunming Medical University from June 2013 to June 20× were collected. Combined with different treatment guidelines for medullary thyroid carcinoma, factors affecting lymph node metastasis and postoperative disease status were analyzed.

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Objective: To explore the mechanism of anlotinib resistance in thyroid carcinoma.

Methods: We constructed an anlotinib-resistant thyroid carcinoma cell line and observed the effect of drug resistance on the functional activity of these cell lines. Transcriptome sequencing and metabolomic sequencing combined with biosynthesis analysis were used to explore and screen possible drug resistance regulatory pathways.

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Article Synopsis
  • A study was conducted to understand if delaying surgery for low-risk papillary thyroid carcinoma (PTC) increases the risk of local tumors spreading or multifocal disease.
  • Researchers categorized patients into two groups: those who underwent observation and those who had immediate surgery, analyzing the outcomes over different observation periods.
  • The results showed no significant differences in local metastasis rates between the two groups, suggesting that active surveillance can be a safe management option for patients with low-risk PTC.
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Objective: This study aimed to evaluate the effectiveness and safety of carbon nanoparticlesguided lymph node dissection during thyroidectomy in patients with papillary thyroid cancer(PTC).

Methods: Clinical trials consisted of two subgroups: unilateral lobectomy (UL; n=283) and total thyroidectomy (TT; n=286). From each subgroup, the patients were randomly assigned to two groups: the carbon nanoparticle group and control group.

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Purpose: Alhough antiangiogenic agents are the bedrock of treatment for radioiodine-refractory differentiated thyroid carcinoma (RAIR-DTC), novel antiangiogenic agents with optimized features like greater target-binding affinities and more favorable pharmacokinetics profile are needed. This phase II randomized, double-blind, placebo-controlled trial investigated the efficacy and safety of anlotinib, a multikinase inhibitor, for RAIR-DTC.

Patients And Methods: Patients (ages between 18 and 70 years) with pathologically confirmed locally advanced or metastatic RAIR-DTC were enrolled and randomly received 12 mg anlotinib once daily or placebo on day 1 to 14 every 3 weeks.

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The objective of this study was to investigate the expression of thyroid peroxidase (TPO) in papillary thyroid carcinoma (PTC) and to preliminarily investigate its value as a marker of lymph node metastasis and recurrence in patients with PTC. Clinical data of PTC patients and TPO expression were collected from The Cancer Genome Atlas (TCGA) database for analysis. We recruited 230 consecutive PTC patients from the Department of Thyroid Surgery of the First Affiliated Hospital of Kunming Medical University, collected their clinicopathological data, and also performed immunohistochemical analysis of TPO expression on their thyroid specimens to validate the results of bioinformatics analysis.

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A 71-year-old woman with recurrent papillary thyroid carcinoma (PTC) was referred to our hospital. A computed tomography scan revealed extensive recurrence in the neck, invading sternocleidomastoid muscle, internal jugular vein, sternal end of the clavicle, strap muscle and skin; and lateral compartment and subclavian lymph nodes were also involved. Multiple pulmonary micrometastases also noticed.

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Background: Management of the inferior parathyroid gland using total thyroidectomy (TT) with central lymph node dissection (CLND) is still controversial. Therefore, we evaluated the safety and effectiveness of single inferior parathyroid autotransplantation.

Methods: The clinical data of patients with papillary thyroid carcinoma (PTC) who underwent TT with bilateral CLND from January 2018 to December 2020 were collected.

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Article Synopsis
  • The study aimed to summarize the treatment experiences of children with papillary thyroid carcinoma (PTC) and assess how initial surgeries impact recurrence and metastasis.
  • A retrospective analysis was performed on 64 pediatric PTC cases from a single hospital over eight years, revealing significant factors influencing reoperation, with central lymph node dissection identified as a critical risk factor.
  • The findings suggest a high rate of lymph node metastasis at diagnosis, recommending total thyroidectomy as the primary treatment for most children, with central lymph node dissection routinely included in the surgical approach.
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Background: Medullary thyroid carcinoma (MTC) is a rare type of thyroid cancer; however, it accounted for 13.4% of the disease-specific mortalities. ALTER01031 (NCT02586350) was a randomised, placebo-controlled phase 2b trial that evaluated the efficacy and safety of anlotinib in locally advanced or metastatic MTC.

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Article Synopsis
  • The study explored how body mass index (BMI) affects the characteristics of papillary thyroid carcinoma (PTC) in a large group of patients (4,476).
  • Results showed a positive correlation between higher BMI and larger tumor size, as well as increased risks of aggressive disease features and recurrence, particularly in overweight and obese patients.
  • The findings suggest that being overweight or obese might influence treatment decisions for patients with PTC and papillary thyroid microcarcinoma (PTMC) due to the associated higher risks.
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In Figure 1A, the images of CG 24h group and Sham 72h group are duplicated, where the picture of Sham 72h group is correct, now the authors have corrected the picture of CG 24h group. In Figure 2A, the images of CG 72h and CSG 72h groups are duplicated, the images of CG 168h and CSG 168h groups are duplicated,where the pictures of CG 168h and CSG 72h groups are correct, now the authors have corrected the pictures of CG 72h and CSG 168h groups. In Figure 3B, the images of CG 24h group and CSG 72h group are duplicated, where the picture of CSG 72h group is correct, now the authors have corrected the picture of CG 24h group.

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Background: Active surveillance (AS) has been considered the first-line management for patients with clinical low-risk papillary thyroid microcarcinoma (PTMC) who often have lymph node micrometastasis (m-LNM) when diagnosed. The "low-risk" and "high prevalence of m-LNM" paradox is a potential barrier to the acceptance of AS for thyroid cancer by both surgeons and patients.

Methods: Patients diagnosed with PTMC who underwent thyroidectomy with at least one lymph node (LN) examined were identified from a tertiary center database (n = 5,399).

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To establish a risk probability model for residual metastatic lymph nodes in patients with papillary thyroid microcarcinoma (PTMC) after cervical central lymph node dissection (CLND). The clinical data of patients with PTMC treated in the First Affiliated Hospital of Kunming Medical University from 2007 to 2020 were retrospectively reviewed. All patients underwent thyroidectomy with CLND, and at least one lymph node was examined.

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Objective: In 2015, American Thyroid Association (ATA) issued the first version of Management Guidelines for Children with Thyroid Nodules and Differentiated Thyroid Cancer. The purpose of this study is to evaluate whether the ATA pediatric guidelines recommended surgical approach for the patient can be applied to surgical treatment of pediatric PTC in China.

Method: From April 2012 to December 2020, clinical data of children (≤18 years) with PTC consecutively admitted and treated with initial surgery in the study's department were retrospectively reviewed.

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Objective: Active surveillance (AS) has been shown to be a safe approach that can effectively block transition from overdiagnosis to overtreatment in patients with low-risk papillary thyroid microcarcinoma (PTMC). This study aimed to determine whether the AS approach can be implemented in China and investigate the population characteristics of Chinese patients who underwent AS.

Methods: The epidemiologic and clinical characteristics as well as patient adherence were evaluated in 115 patients who underwent AS management as an alternative to immediate surgery for low-risk (or highly suspected) PTMC.

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Background: To assess the gaps between the initial management of patients with differentiated thyroid cancer (DTC) in real clinical practice and the recommendations of the 2012 Chinese DTC guidelines.

Methods: This multicenter, prospective study was conducted at nine tertiary hospitals across China. Eligible patients were those having intermediate or high-risk DTC after first-time thyroidectomy.

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Due to exponential increases in incidences, low risk papillary thyroid microcarcinoma (PTMC) has become a clinical and social issue in recent years. An active surveillance (AS) management approach is an alternative to immediate surgery for patients with low risk PTMC. With decreased doubts about the safety and validity due to evidence from a large number of studies, the AS approach has become increasingly popular worldwide.

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Background: To investigate the influence of different risk factors on central lymph node metastasis (CLNM) in the cervical region in patients with papillary thyroid carcinoma (PTC).

Methods: This retrospective study included 2586 PTC patients. Potential risk factors were identified by univariate analysis, and the relationships between these factors and CLNM were ascertained by multivariable analysis.

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We describe a case of recurrent and metastatic radioactive iodine-refractory differentiated thyroid cancer (RAIR-DTC) treated with anlotinib in this report. The patient was randomized to placebo initially, after disease progressed at C8 (C is the treatment cycle), the patient was referred to the open label therapy of anlotinib, 12 mg p.o.

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Purpose: Medullary thyroid cancer (MTC) accounts for about 2% of all thyroid cancer, but has a relatively poor prognosis compared with differentiated thyroid cancer. Anlotinib is a novel multitarget tyrosine kinase inhibitor targeting VEGFR, PDGFR, FGFR, and c-Kit. This multicenter, randomized, double-blind, placebo-controlled phase IIB study (ALTER 01031 and NCT02586350) was conducted to investigate the efficacy and safety of anlotinib in MTC.

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Background: Thyroid cancer is the most common malignancy in human endocrine system. Increasing evidence has indicated that p62 plays a key role in tumorigenesis. The roles and underlying molecular mechanisms of P62 in thyroid cancer, however, remain to be elucidated.

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Long noncoding RNA (lncRNA) Cancer Susceptibility 2 (CASC2) has been proved to contribute to the development of cancers. However, the mechanism behind the action of CASC2 in thyroid cancer is not quite clear. We demonstrated that CASC2 was downregulated in thyroid cancer.

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Background: Papillary thyroid carcinoma (PTC) has increased rapidly over recent years, and radiation, hormone effects, gene mutations, and others were viewed as closely related. However, the molecular mechanisms of PTC have not been cleared. Therefore, we intended to screen more accurate key genes and pathways of PTC by combining RT profiler PCR arrays and bioinformatics methods in this study.

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As a treatment option for cancer, thermal ablation has satisfactory effects on many types of solid tumors (such as liver and renal cancers). However, its clinical applications for the treatment of thyroid nodules and metastatic cervical lymph nodes are still under debate both in China and abroad. In 2015, the "Zhejiang Expert consensus on thermal ablation for thyroid benign nodules, microcarcinoma, and metastatic cervical lymph nodes (2015 edition)," was released by the Thyroid Cancer Committee of Zhejiang Anti-Cancer Association, China.

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