Displaying publications 81 - 100 of 126 in total

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  1. Abdullah MI, Junit SM, Ng KL, Jayapalan JJ, Karikalan B, Hashim OH
    Int J Med Sci, 2019;16(3):450-460.
    PMID: 30911279 DOI: 10.7150/ijms.29935
    Papillary thyroid cancer (PTC) is the most prevalent form of malignancy among all cancers of the thyroid. It is also one of the few cancers with a rapidly increasing incidence. PTC is usually contained within the thyroid gland and generally biologically indolent. Prognosis of the cancer is excellent, with less than 2% mortality at 5 years. However, more than 25% of patients with PTC developed a recurrence during a long term follow-up. The present article provides an updated condensed overview of PTC, which focuses mainly on the molecular alterations involved and recent biomarker investigations.
    Matched MeSH terms: Thyroid Neoplasms/diagnosis; Thyroid Neoplasms/genetics*; Thyroid Neoplasms/therapy
  2. Zamora-Ros R, Rinaldi S, Tsilidis KK, Weiderpass E, Boutron-Ruault MC, Rostgaard-Hansen AL, et al.
    Int J Cancer, 2016 Jan 01;138(1):65-73.
    PMID: 26190646 DOI: 10.1002/ijc.29693
    Incidence rates of differentiated thyroid carcinoma (TC) have increased in many countries. Adiposity and dietary risk factors may play a role, but little is known on the influence of energy intake and macronutrient composition. The aim of this study was to investigate the associations between TC and the intake of energy, macronutrients, glycemic index (GI) and glycemic load in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort. The study included 477,274 middle-age participants (70.2% women) from ten European countries. Dietary data were collected using country-specific validated dietary questionnaires. Total carbohydrates, proteins, fats, saturated, monounsaturated and polyunsaturated fats (PUFA), starch, sugar, and fiber were computed as g/1,000 kcal. Multivariable Cox regression was used to calculate multivariable adjusted hazard ratios (HR) and 95% confidence interval (CI) by intake quartile (Q). After a mean follow-up time of 11 years, differentiated TC was diagnosed in 556 participants (90% women). Overall, we found significant associations only with total energy (HRQ4 vs .Q1 , 1.29; 95% CI, 1.00-1.68) and PUFA intakes (HRQ4 vs .Q1 , 0.74; 95% CI, 0.57-0.95). However, the associations with starch and sugar intake and GI were significantly heterogeneous across body mass index (BMI) groups, i.e., positive associations with starch and GI were found in participants with a BMI ≥ 25 and with sugar intake in those with BMI 
    Matched MeSH terms: Thyroid Neoplasms/etiology*; Thyroid Neoplasms/epidemiology*; Thyroid Neoplasms/pathology
  3. Zamora-Ros R, Cayssials V, Franceschi S, Kyrø C, Weiderpass E, Hennings J, et al.
    Int J Cancer, 2020 Apr 01;146(7):1841-1850.
    PMID: 31342519 DOI: 10.1002/ijc.32589
    Polyphenols are bioactive compounds with several anticarcinogenic activities; however, human data regarding associations with thyroid cancer (TC) is still negligible. Our aim was to evaluate the association between intakes of total, classes and subclasses of polyphenols and risk of differentiated TC and its main subtypes, papillary and follicular, in a European population. The European Prospective Investigation into Cancer and Nutrition cohort included 476,108 men and women from 10 European countries. During a mean follow-up of 14 years, there were 748 incident differentiated TC cases, including 601 papillary and 109 follicular tumors. Polyphenol intake was estimated at baseline using validated center/country-specific dietary questionnaires and the Phenol-Explorer database. In multivariable-adjusted Cox regression models, no association between total polyphenol and the risks of overall differentiated TC (HRQ4 vs. Q1 = 0.99, 95% confidence interval [CI] 0.77-1.29), papillary (HRQ4 vs. Q1 = 1.06, 95% CI 0.80-1.41) or follicular TC (HRQ4 vs. Q1 = 1.10, 95% CI 0.55-2.22) were found. No associations were observed either for flavonoids, phenolic acids or the rest of classes and subclasses of polyphenols. After stratification by body mass index (BMI), an inverse association between the intake of polyphenols (p-trend = 0.019) and phenolic acids (p-trend = 0.007) and differentiated TC risk in subjects with BMI ≥ 25 was observed. In conclusion, our study showed no associations between dietary polyphenol intake and differentiated TC risk; although further studies are warranted to investigate the potential protective associations in overweight and obese individuals.
    Matched MeSH terms: Thyroid Neoplasms/epidemiology*; Thyroid Neoplasms/prevention & control
  4. Dossus L, Franceschi S, Biessy C, Navionis AS, Travis RC, Weiderpass E, et al.
    Int J Cancer, 2018 Apr 01;142(7):1332-1342.
    PMID: 29168186 DOI: 10.1002/ijc.31172
    Other than the influence of ionizing radiation and benign thyroid disease, little is known about the risk factors for differentiated thyroid cancer (TC) which is an increasing common cancer worldwide. Consistent evidence shows that body mass is positively associated with TC risk. As excess weight is a state of chronic inflammation, we investigated the relationship between concentrations of leptin, adiponectin, C-reactive protein, interleukin (IL)-6, IL-10 and tumor necrosis factor (TNF)-α and the risk of TC. A case-control study was nested within the European Prospective Investigation into Cancer and Nutrition (EPIC) study and included 475 first primary incident TC cases (399 women and 76 men) and 1,016 matched cancer-free cohort participants. Biomarkers were measured in serum samples using validated and highly sensitive commercially available immunoassays. Odds ratios (ORs) of TC by levels of each biomarker were estimated using conditional logistic regression models, adjusting for BMI and alcohol consumption. Adiponectin was inversely associated with TC risk among women (ORT3vs.T1  = 0.69, 95% CI: 0.49-0.98, Ptrend  = 0.04) but not among men (ORT3vs.T1  = 1.36, 95% CI: 0.67-2.76, Ptrend  = 0.37). Increasing levels of IL-10 were positively associated with TC risk in both genders and significantly so in women (ORT3vs.T1  = 1.59, 95% CI: 1.13-2.25, Ptrend  = 0.01) but not in men (ORT3vs.T1  = 1.78, 95% CI: 0.80-3.98, Ptrend  = 0.17). Leptin, CRP, IL-6 and TNF-α were not associated with TC risk in either gender. These results indicate a positive association of TC risk with IL-10 and a negative association with adiponectin that is probably restricted to women. Inflammation may play a role in TC in combination with or independently of excess weight.
    Matched MeSH terms: Thyroid Neoplasms/blood*; Thyroid Neoplasms/epidemiology*
  5. Surenthiran Ramanathan, Tong, Chin Voon
    MyJurnal
    Papillary thyroid microcarcinoma is not uncommon
    and constitutes almost one third of all differentiated
    thyroid carcinomas. It is generally regarded as low risk
    and usually an incidental finding from histopathology
    examination. Some areas of management of this entity
    remains uncertain and requires a multidisciplinary
    approach. We present a patient who initially came to
    us with symptoms of hyperthyroidism, later underwent
    thyroidectomy for a suspicious lesion but was found to
    have micropapillary thyroid carcinoma in another part
    of her thyroid gland.
    Matched MeSH terms: Thyroid Neoplasms
  6. Marjmin, O., Rohaizak, M., Naqiyah, I., Imtiaz, H., Hartinie, S.M.
    MyJurnal
    Primary thyroid lymphoma is a rare tumour of the thyroid gland, accounting for 1-2 % of all thyroid malignancies. Diagnosis by fine needle aspiration cytology occasionally inconclusive, needing bigger biopsy or even thyroidectomy. This study reviews our experience with primary thyroid lymphoma.
    Matched MeSH terms: Thyroid Neoplasms
  7. Abdul Halim Shibghatullah, Wan Shah Jihan Wan Din, Ramiza Ramza Ramli
    MyJurnal
    Follicular adenoma defined as a well encapsulated benign neoplastic condition of thyroid follicles. We describe this interesting case of a boy presented with right sided neck swelling that was diagnosed as a branchial cyst but later after excision, the histopathology revealed follicular adenoma of the thyroid with hemorrhage and degenerative changes in the centre. To our knowledge, this is the first reported case of follicular thyroid adenoma presented as branchial cyst.
    Matched MeSH terms: Thyroid Neoplasms
  8. Al-Yahya, S.N., Marina, M.B., Lye, M.H., Loo, C.P.
    MyJurnal
    Thyroglossal duct cyst is the most common upper neck midline lesion in children. Approximately 1% of
    thyroglossal duct cyst undergoes malignant transformation. Calcification which is a marker of malignancy
    almost always points out to papillary thyroid carcinoma. Benign case of calcified thyroglossal cyst maybe
    undiagnosed or under reported. We report a case of a 5 year old girl with a benign calcified thyroglossal
    duct cyst, a fourth case in world literature. Here the differences between a benign and malignant
    thyroglossal duct cyst are discussed.
    Matched MeSH terms: Thyroid Neoplasms
  9. Wan Sohaimi WF, Lee YF, Mat Nawi N, Mohd Rohani MF, Sapiai NA
    Indian J Surg Oncol, 2019 Dec;10(4):676-678.
    PMID: 31857764 DOI: 10.1007/s13193-019-00977-8
    We report a unique case of differentiated thyroid carcinoma (DTC) with squamous metaplasia complicated with chronic discharging ulcer. A 76-year-old gentleman was referred to us after defaulted treatment 1 year post-total thyroidectomy. He presented to us with long-standing chronic, non-healing, ulcerative and discharging wound at the anterior neck at previous total thyroidectomy scar. The primary tumour was histologically diagnosed as papillary malignant cells with extensive squamous metaplasia. Squamous metaplasia is a rare finding in thyroid carcinoma that carried a poorer prognostic factor.
    Matched MeSH terms: Thyroid Neoplasms
  10. Win TT, Othman NH, Mohamad I
    Indian J Pathol Microbiol, 2017 Apr-Jun;60(2):167-171.
    PMID: 28631629 DOI: 10.4103/IJPM.IJPM_457_16
    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.

    RESULTS: Only eight cases (1.9%) of PDTC were diagnosed among 418 thyroid carcinomas. Mean age was 48.12 with 3:5 (male:female) and tumor size ranged 3-12 cm. PDTC were diagnosed coexisting with one or more other pathologies; nodular hyperplasia (four cases), papillary carcinoma (one case), follicular carcinoma (three cases), and Hashimoto thyroiditis (two cases); with ≥60% PDTC component. Six cases associated with high-grade features died within 3 years after diagnosis.

    DISCUSSION: Mean age in this study was younger including a 20-year-old girl. Younger age was associated with better prognosis. Most of the cases had underlying benign thyroid lesions and differentiated thyroid carcinoma. Most of the PDTC had poor prognosis associated with PDTC component ≥60%, tumor necrosis, high mitotic count, lymph node involvement, vascular invasion and distant metastasis; and these cases died within 3 years after diagnosis.

    CONCLUSION: Although treatment of PDTC remains surgery followed by radioiodine therapy, correct histopathological diagnosis is important for clinicians and oncologists to predict the prognosis. All thyroid carcinoma should be sampled thoroughly not to miss small foci of PDTC component.
    Matched MeSH terms: Thyroid Neoplasms/epidemiology*; Thyroid Neoplasms/pathology*
  11. Wong YP, Affandi KA, Tan GC, Muhammad R
    Indian J Pathol Microbiol, 2017 9 25;60(3):430-432.
    PMID: 28937391 DOI: 10.4103/IJPM.IJPM_287_16
    Metastatic disease involving the thyroid gland is uncommon. Solitary thyroid metastases from various primary sites particularly kidney, lung, and breast had been previously described. To the best of our knowledge, metastases from two topographically separate primary malignancies to the thyroid have never been documented hitherto. This is the first reported case of cancer-to-cancer metastasis involving an invasive breast carcinoma metastasized within a metastatic renal cell carcinoma in the nonneoplastic thyroid in a 58-year-old woman. Distinguishing a secondary thyroid metastases from a primary thyroid malignancy is utmost crucial as treatment differs. The possibility of tumor metastases from two separated primaries should always be considered in a tumor exhibiting malignant cell populations with two distinctive histomorphological appearances. The role of immunohistochemistry stains in equivocal cases cannot be overemphasized.
    Matched MeSH terms: Thyroid Neoplasms/pathology*; Thyroid Neoplasms/secondary*
  12. Park JH, Lee J, Hakim NA, Kim HY, Kang SW, Jeong JJ, et al.
    Head Neck, 2015 Dec;37(12):1705-11.
    PMID: 24986508 DOI: 10.1002/hed.23824
    This study assessed the results of robotic thyroidectomy by fellowship-trained surgeons in their initial independent practice, and whether standard fellowship training for robotic surgery shortens the learning curve.
    Matched MeSH terms: Thyroid Neoplasms/pathology; Thyroid Neoplasms/surgery*
  13. Khoo KS, Koh PS, Ng KL
    Gland Surg, 2020 Dec;9(6):2198-2203.
    PMID: 33447571 DOI: 10.21037/gs-20-474
    Acute suppurative thyroiditis account for <1% of thyroid diseases and is uncommon because of the gland's encapsulation, iodine-rich environment, good vascular supply and extensive lymphatic drainage. It has been reported in patients with underlying goiters, thyroid cancers and in immuno-compromised patients. The usual causative organisms are Staphylococci spp. and Streptococci spp. Rarer organisms include Klebsiella spp. and Salmonella spp. Due to its rarity (as there have been only 28 cases of Salmonella thyroid abscess being reported in the literature till 2020), only case reports are available to guide management. We report two cases of thyroid abscess due to Salmonella enteritidis in our institution that may herald the re-emergence of this uncommon infection of the thyroid gland and to raise awareness for all clinicians. Both patients presented with neck swelling, dysphagia and sepsis. Surgical intervention was warranted in both patients due to the severity of the disease and failed medical therapy. Recovery was uneventful following adequate surgical intervention and antibiotic therapy according to the culture and sensitivity report of the pathogen. This case report highlights that both patients were immunocompromised, and they contracted Salmonella thyroid abscess without any gastrointestinal involvement. Thus, a high index of suspicion for Salmonella thyroid abscess in immunocompromised patients can expedite the diagnosis and appropriate management can be commenced such as antibiotic therapy, percutaneous aspiration and surgical drainage in the event of failed medical therapy.
    Matched MeSH terms: Thyroid Neoplasms
  14. Sathasivam H, Loh YM, Saw CL, Khalid N
    Gerodontology, 2017 Jun;34(2):276-279.
    PMID: 27384017 DOI: 10.1111/ger.12240
    OBJECTIVE: A case of oral metastatic follicular thyroid carcinoma is presented.

    BACKGROUND: Metastatic tumours are more frequent in older individuals and can be the only sign/symptom of an undiagnosed primary malignancy.

    CASE REPORT: A 69-year-old lady presented with an enlarging mandibular swelling. Incisional biopsy and imaging studies were suggestive of metastatic follicular thyroid carcinoma.

    CONCLUSION: Metastatic tumours should be considered in the differential diagnosis of mandibular swellings especially in older individuals.

    Matched MeSH terms: Thyroid Neoplasms
  15. Mohamad Yusof A, Jamal R, Muhammad R, Abdullah Suhaimi SN, Mohamed Rose I, Saidin S, et al.
    PMID: 29713312 DOI: 10.3389/fendo.2018.00158
    The incidence rate of papillary thyroid carcinoma (PTC) has rapidly increased in the recent decades, and the microRNA (miRNA) is one of the potential biomarkers in this cancer. Despite good prognosis, certain features such as lymph node metastasis (LNM) and BRAF V600E mutation are associated with a poor outcome. More than 50% of PTC patients present with LNM and BRAF V600E is the most common mutation identified in this cancer. The molecular mechanisms underlying these features are yet to be elucidated. This study aims to elucidate miRNA-genes interaction networks in PTC with or without LNM and to determine the association of BRAF V600E mutation with miRNAs and genes expression profiles. Next generation sequencing was performed to characterize miRNA and gene expression profiles in 20 fresh frozen tumor and the normal adjacent tissues of PTC with LNM positive (PTC LNM-P) and PTC without LNM (PTC LNN). BRAF V600E was genotyped using Sanger sequencing. Bioinformatics integration and pathway analysis were performed to determine the regulatory networks involved. Based on network analysis, we then investigated the association between miRNA and gene biomarkers, and pathway enrichment analysis was performed to study the role of candidate biomarkers. We identified 138 and 43 significantly deregulated miRNAs (adjusted p value thyroid cancer. These findings may lead to better understanding of carcinogenesis and metastasis processes. This study also complements the existing knowledge about deregulated miRNAs in papillary thyroid carcinoma development.
    Matched MeSH terms: Thyroid Neoplasms
  16. Zamora-Ros R, Alghamdi MA, Cayssials V, Franceschi S, Almquist M, Hennings J, et al.
    Eur J Nutr, 2019 Dec;58(8):3303-3312.
    PMID: 30535794 DOI: 10.1007/s00394-018-1874-z
    PURPOSE: Coffee and tea constituents have shown several anti-carcinogenic activities in cellular and animal studies, including against thyroid cancer (TC). However, epidemiological evidence is still limited and inconsistent. Therefore, we aimed to investigate this association in a large prospective study.

    METHODS: The study was conducted in the EPIC (European Prospective Investigation into Cancer and Nutrition) cohort, which included 476,108 adult men and women. Coffee and tea intakes were assessed through validated country-specific dietary questionnaires.

    RESULTS: During a mean follow-up of 14 years, 748 first incident differentiated TC cases (including 601 papillary and 109 follicular TC) were identified. Coffee consumption (per 100 mL/day) was not associated either with total differentiated TC risk (HRcalibrated 1.00, 95% CI 0.97-1.04) or with the risk of TC subtypes. Tea consumption (per 100 mL/day) was not associated with the risk of total differentiated TC (HRcalibrated 0.98, 95% CI 0.95-1.02) and papillary tumor (HRcalibrated 0.99, 95% CI 0.95-1.03), whereas an inverse association was found with follicular tumor risk (HRcalibrated 0.90, 95% CI 0.81-0.99), but this association was based on a sub-analysis with a small number of cancer cases.

    CONCLUSIONS: In this large prospective study, coffee and tea consumptions were not associated with TC risk.

    Matched MeSH terms: Thyroid Neoplasms/epidemiology*
  17. Yang SP, Ying LS, Saw S, Tuttle RM, Venkataraman K, Su-Ynn C
    Endocr Pract, 2015 Nov;21(11):1255-68.
    PMID: 26247114 DOI: 10.4158/EP15850.OR
    OBJECTIVE: Numerous published guidelines have described the optimal management of thyroid cancer. However, these rely on the clinical availability of diagnostic and therapeutic modalities. We hypothesized that the availability of medical resources and economic circumstances vary in Asia-Pacific countries, making it difficult to implement guideline recommendations into clinical practice.

    METHODS: We surveyed participants at the 2009 and 2013 Congresses of the Association of Southeast Asian Nations Federation of Endocrine Societies by distributing questionnaires to attendees at registration.

    RESULTS: Responses were obtained from 268 respondents in 2009 and 163 respondents in 2013. Similar to the high prevalence of low-risk thyroid cancer observed in the Surveillance, Epidemiology, and End Results database, across the Asia-Pacific countries surveyed in 2009 and 2013, 50 to 100% of the respondents from the Philippines, Malaysia, Singapore, China, Taiwan, Thailand, Hong Kong, Korea, and Sri Lanka reported that more than 50% of the patients had low-risk thyroid cancer on follow-up. Importantly, there was much variation with regards to the perceived availability of investigation and treatment modalities.

    CONCLUSION: We found a wide variation in clinicians' perception of availability of diagnostic and therapeutic modalities in the face of a rise in thyroid cancer incidence and thyroid cancer management guidelines that emphasized their importance. The lack of availability of management tools and treatments will prove to be a major barrier to the implementation of thyroid cancer management guidelines in Southeast Asia, and likely in other parts of the world as well.

    Matched MeSH terms: Thyroid Neoplasms/diagnosis*; Thyroid Neoplasms/epidemiology; Thyroid Neoplasms/therapy*
  18. Ni H, Htet A
    PMID: 23074376 DOI: 10.3332/ecancer.2012.274
    Myasthenia gravis (MG) is an autoantibody-mediated disorder affecting the neuromuscular junction causing characteristic fatigable muscle weakness. Though it can be associated with tumours of the thymus as well as thyroid disorders, it is rare for both to coexist. The exact prevalence of thyroid carcinoma in MG with thymoma is not known but only about a dozen cases have been reported in the literature. We report a case of a 38-year-old Myanmar lady who presented with weakness and breathlessness due to MG with neck swelling. On examination, she had fatigable proximal muscle weakness and thyroid enlargement with no obvious features of hyperthyroidism. Mediastinal widening and an enlarged thyroid gland were noted on her chest X-ray and chest CT. A subtotal thyroidectomy and thymectomy were done. The histology showed follicular carcinoma of the thyroid and benign thymoma. The majority of the reported cases of thyroid carcinoma in association with MG were papillary carcinoma. Follicular carcinoma thyroid associated with MG has not yet been reported in the literature.
    Matched MeSH terms: Thyroid Neoplasms
  19. Khaw B, Sivalingam S, Pathamanathan SS, Tan TS, Naicker M
    Ear Nose Throat J, 2014 12;93(12):508-11.
    PMID: 25531844
    Approximately 25% of all cases of extranodal non-Hodgkin lymphoma (NHL) occur in the head and neck region; NHL of the external auditory canal (EAC) and thyroid gland are rare. Specific immunohistochemical staining of the excised tissue is required to confirm the final pathologic diagnosis. We report the case of a 53-year-old woman with underlying systemic lupus erythematosus and autoimmune hemolytic anemia that were in remission. She presented with chronic left ear pain, a mass in the left EAC, and rapid growth of an anterior neck swelling that had led to left vocal fold palsy. High-resolution computed tomography (CT) of the temporal bone and CT of the neck detected a mass lateral to the left tympanic membrane and another mass in the anterior neck that had infiltrated the thyroid gland. The patient was diagnosed with simultaneous B-cell lymphoma of the left EAC and thyroid gland. She was treated with chemotherapy. She responded well to treatment and was lost to follow-up after 1 year. To the best of our knowledge, the simultaneous occurrence of a lymphoma in the EAC and the thyroid has not been previously described in the literature.
    Matched MeSH terms: Thyroid Neoplasms/diagnosis*; Thyroid Neoplasms/therapy
  20. Jayaram G
    Diagn Cytopathol, 2000 Apr;22(4):227-9.
    PMID: 10787142
    Columnar cell variant of papillary carcinoma (CCV-PC) thyroid is a rare and aggressive tumor composed of tall columnar cells that form papillae, glands and solid structures. This paper describes fine needle aspiration (FNA) cytologic features in a case of CCV-PC occurring in the right thyroid lobe of a 27-year-old female. Smears showed tall columnar cells in monolayered, three-dimensional, acinar and occasional papillary clusters. Nuclei were oval or elongated and monomorphic. Nuclear pseudostratification, resembling that seen in respiratory epithelial cells, was present in some of the cell clusters. Occasional cells showed squamous or Hurthle cell metaplasia. Nuclear grooves and intranuclear cytoplasmic inclusions were not seen. Sections of the right lobectomy specimen showed an well-encapsulated CCV-PC with capsular and vascular permeation. Tall cell variant of papillary carcinoma (TCV-PC) can be distinguished from CCV-PC by the oxyphilia of the tumor cells and the absence of nuclear pseudostratification. Colorectal and endometrial adenocarcinomas metastatic to the thyroid may be difficult to distinguish from CCV-PC.
    Matched MeSH terms: Thyroid Neoplasms/pathology*; Thyroid Neoplasms/surgery
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