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Coca-Pelaz A, Rodrigo JP, Agaimy A, Williams MD, Saba NF, Nuyts S, Randolph GW, López F, Vander Poorten V, Kowalski LP, Civantos FJ, Zafereo ME, Mäkitie AA, Cohen O, Nixon IJ, Rinaldo A, Ferlito A. Poorly differentiated thyroid carcinomas: conceptual controversy and clinical impact. Virchows Arch 2024; 484:733-742. [PMID: 38400843 DOI: 10.1007/s00428-024-03752-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/23/2024] [Accepted: 01/28/2024] [Indexed: 02/26/2024]
Abstract
Poorly differentiated thyroid carcinomas (PDTC) are rare diseases; nevertheless, they account for the majority of deaths from non-anaplastic follicular cell-derived thyroid carcinomas. Establishing the diagnosis and treatment of PDTC is challenging given the low incidence and the lack of standardization of diagnostic criteria. These limitations hamper the ability to compare therapeutic modalities and outcomes between recent and older studies. Recently, the 5th edition of the classification of endocrine tumors has been published, which includes changes in nomenclature and the addition of the disease entity of "differentiated high-grade follicular cell-derived carcinomas". On the other hand, the recently witnessed advances in molecular diagnostics have enriched therapeutic options and improved prognosis for patients. We herein review the various historical variations and evolution in the diagnostic criteria for PDTC. This systematic review attempts to clarify the evolution of the histological and molecular characteristics of this disease, its prognosis, as well as its treatment options.
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Affiliation(s)
- Andrés Coca-Pelaz
- Department of Otolaryngology, Hospital Universitario Central de Asturias, University of Oviedo, ISPA, IUOPA, CIBERONC, Av/ Rome S/N. 33011, Oviedo, Asturias, Spain.
| | - Juan P Rodrigo
- Department of Otolaryngology, Hospital Universitario Central de Asturias, University of Oviedo, ISPA, IUOPA, CIBERONC, Av/ Rome S/N. 33011, Oviedo, Asturias, Spain
| | - Abbas Agaimy
- Institute of Pathology, Friedrich Alexander University Erlangen-Nürnberg, University Hospital, Erlangen, Germany
| | - Michelle D Williams
- Department of Pathology, The University of Texas M. D. Anderson Cancer Center, Houston, TX, USA
| | - Nabil F Saba
- Department of Hematology and Medical Oncology, The Winship Cancer Institute of Emory University, Atlanta, GA, USA
| | - Sandra Nuyts
- Laboratory of Experimental Radiotherapy, Department of Oncology, University of Leuven, Leuven, Belgium
- Department of Radiation Oncology, Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
| | - Gregory W Randolph
- Division of Thyroid and Parathyroid Endocrine Surgery, Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Boston, MA, USA
| | - Fernando López
- Department of Otolaryngology, Hospital Universitario Central de Asturias, University of Oviedo, ISPA, IUOPA, CIBERONC, Av/ Rome S/N. 33011, Oviedo, Asturias, Spain
| | - Vincent Vander Poorten
- Department of Oncology, Section Head and Neck Oncology, KU Leuven, Leuven, Belgium
- Otorhinolaryngology, Head and Neck Surgery, University Hospitals Leuven, Leuven Cancer Institute, Leuven, Belgium
| | - Luiz P Kowalski
- Department of Otorhinolaryngology-Head and Neck Surgery, A.C. Camargo Cancer Center, São Paulo, Brazil
| | - Francisco J Civantos
- Department of Otolaryngology-Head and Neck Surgery, Sylvester Cancer Center, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - Mark E Zafereo
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Antti A Mäkitie
- Department of Otorhinolaryngology-Head and Neck Surgery, Research Program in Systems Oncology, Faculty of Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Oded Cohen
- Samson Assuta Ashdod University Hospital, Affiliated With Ben Gurion University, Beer Sheva, Israel
| | - Iain J Nixon
- Department of Surgery and Otolaryngology, Head and Neck Surgery, Edinburgh University, Edinburgh, Scotland, UK
| | | | - Alfio Ferlito
- Coordinator of the International Head and Neck Scientific Group, Padua, Italy
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Tong J, Ruan M, Jin Y, Fu H, Cheng L, Luo Q, Liu Z, Lv Z, Chen L. Poorly differentiated thyroid carcinoma: a clinician's perspective. Eur Thyroid J 2022; 11:e220021. [PMID: 35195082 PMCID: PMC9010806 DOI: 10.1530/etj-22-0021] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 02/22/2022] [Indexed: 11/14/2022] Open
Abstract
Poorly differentiated thyroid carcinoma (PDTC) is a rare thyroid carcinoma originating from follicular epithelial cells. No explicit consensus can be achieved to date due to sparse clinical data, potentially compromising the outcomes of patients. In this comprehensive review from a clinician's perspective, the epidemiology and prognosis are described, diagnosis based on manifestations, pathology, and medical imaging are discussed, and both traditional and emerging therapeutics are addressed as well. Turin consensus remains the mainstay diagnostic criteria for PDTC, and individualized assessments are decisive for treatment option. The prognosis is optimal if complete resection is performed at early stage but dismal in nearly half of patients with locally advanced and/or distant metastatic diseases, in which adjuvant therapies such as 131I therapy, external beam radiation therapy, and chemotherapy should be incorporated. Emerging therapeutics including molecular targeted therapy, differentiation therapy, and immunotherapy deserve further investigations to improve the prognosis of PDTC patients with advanced disease.
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Affiliation(s)
- Junyu Tong
- Department of Nuclear Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
- Department of Nuclear Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, People’s Republic of China
| | - Maomei Ruan
- Department of Nuclear Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, People’s Republic of China
- Department of Nuclear Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Yuchen Jin
- Department of Nuclear Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, People’s Republic of China
| | - Hao Fu
- Department of Nuclear Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, People’s Republic of China
| | - Lin Cheng
- Department of Nuclear Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, People’s Republic of China
| | - Qiong Luo
- Department of Nuclear Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
| | - Zhiyan Liu
- Department of Nuclear Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, People’s Republic of China
- Department of Pathology, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, People’s Republic of China
| | - Zhongwei Lv
- Department of Nuclear Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
| | - Libo Chen
- Department of Nuclear Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, People’s Republic of China
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Thyroid Cancer Stem-Like Cells: From Microenvironmental Niches to Therapeutic Strategies. J Clin Med 2021; 10:jcm10071455. [PMID: 33916320 PMCID: PMC8037626 DOI: 10.3390/jcm10071455] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/25/2021] [Accepted: 03/29/2021] [Indexed: 02/08/2023] Open
Abstract
Thyroid cancer (TC) is the most common endocrine malignancy. Recent progress in thyroid cancer biology revealed a certain degree of intratumoral heterogeneity, highlighting the coexistence of cellular subpopulations with distinct proliferative capacities and differentiation abilities. Among those subpopulations, cancer stem-like cells (CSCs) are hypothesized to drive TC heterogeneity, contributing to its metastatic potential and therapy resistance. CSCs principally exist in tumor areas with specific microenvironmental conditions, the so-called stem cell niches. In particular, in thyroid cancer, CSCs' survival is enhanced in the hypoxic niche, the immune niche, and some areas with specific extracellular matrix composition. In this review, we summarize the current knowledge about thyroid CSCs, the tumoral niches that allow their survival, and the implications for TC therapy.
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Zhang M, Lei S, Chen Y, Wu Y, Ye H. The role of lymph node status in cancer-specific survival and decision-making of postoperative radiotherapy in poorly differentiated thyroid cancer: a population-based study. Am J Transl Res 2021; 13:383-390. [PMID: 33527032 PMCID: PMC7847507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 11/14/2020] [Indexed: 06/12/2023]
Abstract
OBJECTIVE This study aimed to investigate the prognostic value of lymph node (LN) status for patients with poorly differentiated thyroid cancer (PDTC), and to develop a reliable nomogram to predict the 3-, 5- and 10-year cancer-specific survival (CSS) and assist the decision-making of postoperative radiotherapy (PORT). METHODS The Surveillance, Epidemiology, and End Results (SEER) database was utilized to screen eligible patients who were diagnosed between 2004 and 2016. The optimal values of age, metastatic lymph node ratio (LNR), and the number of metastatic lymph nodes (MLN) were determined and incorporated into the construction of a nomogram. The performance of the model was evaluated by generating a calibration curve and calculating the consistency index (C-index). Based on the nomogram, patients were classified into three risk cohorts. The prognostic efficacy of PORT was evaluated in each cohort. RESULTS A total of 522 PDTC patients were included in this study. The LN status-associated parameters (MLN and LNR) were independent risk factors for CSS of PDTC patients. Based on MLN, LNR, and other clinical characteristics (age and T stage), an individualized nomogram was constructed that showed an acceptable predictive performance. Furthermore, we proposed a novel risk-classification system to stratify PDTC patients and to assess the prognostic efficacy of PORT. Only patients in high-risk cohort were found eligible to benefit from PORT. CONCLUSION LN status is statistically associated with the prognosis of PDTC patients. In addition, the individualized nomogram may be a significant tool to assist the evaluation of patients' long-term prognosis and to guide the decision-making for PORT.
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Affiliation(s)
- Maojie Zhang
- Clinical Medical College, Guizhou Medical UniversityGuiyang 550001, Guizhou, China
- Department of Thyroid Surgery, The Affiliated Hospital of Guizhou Medical UniversityGuiyang 550001, Guizhou, China
| | - Siyi Lei
- Clinical Medical College, Guizhou Medical UniversityGuiyang 550001, Guizhou, China
| | - Yuanyi Chen
- Guizhou First People’s HospitalGuiyang, China
| | - Yuzhou Wu
- Gui Hang Group Guiyang 300 HospitalGuiyang, China
| | - Hui Ye
- Department of Thyroid Surgery, The Affiliated Hospital of Guizhou Medical UniversityGuiyang 550001, Guizhou, China
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Poorly differentiated thyroid carcinoma (PDTC) characteristics and the efficacy of radioactive iodine (RAI) therapy as an adjuvant treatment in a tertiary cancer care center. Eur Arch Otorhinolaryngol 2020; 277:1807-1814. [PMID: 32170421 DOI: 10.1007/s00405-020-05898-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 03/02/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND Poorly differentiated thyroid cancer (PDTC) is biologically more aggressive. Surgery remains the mainstay of treatment. The utility of radioactive iodine (RAI) after surgery is unclear. METHODS In this retrospective study, patients treated between Jan 2012 and Dec 2017 were included. The demographic, clinical and treatment-related details, including RAI ablation, were recorded and their survival analyzed. RESULTS Thirty-five patients fulfilled the eligibility criteria. Majority was treatment naïve at presentation. All patients underwent surgery followed by RAI ablation, with a cumulative median dose of 220 mCi (range 40-1140). Sixteen patients received more than one radioiodine treatment for distant metastases. Incomplete resection, age > 45 years and the presence of distant metastasis influenced survival the most. The 3-year PFS of patients with PDTC was 69%. CONCLUSION All patients in our series showed uptake and responded to treatment. Further use of molecular markers and functional molecular imaging would better our understanding of this entity.
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Sub-segmentation specific paradigms for better individualized management of poorly differentiated thyroid carcinoma: can a systematic approach be evolved? Nucl Med Commun 2019; 41:1-4. [PMID: 31800506 DOI: 10.1097/mnm.0000000000001100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lenvatinib Administered via Nasogastric Tube in Poorly Differentiated Thyroid Cancer. Case Rep Endocrinol 2019; 2019:6831237. [PMID: 31641541 PMCID: PMC6766666 DOI: 10.1155/2019/6831237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 08/02/2019] [Indexed: 11/18/2022] Open
Abstract
Background The tyrosine kinase inhibitors (TKIs) are indicated for the treatment of locally advanced or metastatic progressive thyroid carcinoma (CDT), refractory to radioactive iodine. The following report describes the efficacy of lenvatinib administered through a nose-gastric tube (SNG) in a patient affected with a poorly differentiated thyroid carcinoma (PDTC) which determined a stenosis of the esophagus. Material and Methods A patient was followed up for papillary thyroid carcinoma follicular variant (T3NxMx), subjected to total thyroidectomy and treated with iodine-131 radio metabolic therapy. Two years after surgery, following the onset of dysphonia and dysphagia, patient was submitted to a computed tomography (CT) scan of the neck that showed the presence of a lesion of 6 × 2.5 × 3.5 cm, which determined trachea deviation and cervical esophagus compression. The biopsy indicated the presence of PDTC, triggering tracheal lumen reduction and sub-stenosis of the cervical esophagus for an ab-extrinsic compression. A nose-gastric tube (SNG) was placed and lenvatinib was started at a dose of 20 mg/day, administered via this probe after opening the capsules and diluting the drug in 10 ml of saline solution. Results One month later, CT showed a significant cervical lesion reduction. Bronchoscopy confirmed tracheal infiltration, but the residual caliber was improved from 50% to 75%. At the esophagogastroduodenoscopy (EGDS), the sub stenosis of the cervical esophagus was no longer appreciated; however, a double perforation of the esophagus was found, without fistula. Conclusion Lenvatinib therapy is effective also when administered via SNG. Our result is of particular relevance in the management of thyroid cancer patients, especially in the presence of subjects unable to swallow. Further studies are needed to validate the administration of lenvatinib by SNG, in order to extend the indications to this alternative administration way, beside the oral one.
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Xue F, Li D, Hu C, Wang Z, He X, Wu Y. Application of intensity-modulated radiotherapy in unresectable poorly differentiated thyroid carcinoma. Oncotarget 2017; 8:15934-15942. [PMID: 27776342 PMCID: PMC5362535 DOI: 10.18632/oncotarget.12785] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Accepted: 10/13/2016] [Indexed: 12/19/2022] Open
Abstract
Poorly differentiated thyroid carcinoma (PDTC) is a rare and aggressive malignancy with high rates of invasion and distant metastasis. This study was to explore the ability of intensity-modulated radiotherapy (IMRT) combined with chemotherapy to manage unresectable PDTC. Between February 2011 and April 2012, 5 patients with unresectable PDTC were treated by IMRT at our institution and were included in this analysis. The median radiotherapy dose to the gross tumor volume (GTV) was 66 Gy/33 fractions/6.4 weeks. All patients received chemotherapy, and one patient with tumor compression symptoms had a tracheotomy before treatment. The mean survival time of the 5 patients was 41.6 months. The direct causes of death were distant metastases (40%) and progression of the locoregional disease (20%). In conclusion, IMRT combined with chemotherapy for unresectable PDTC might be beneficial to improve locoregional control. Further new therapies are needed to control metastases.
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Affiliation(s)
- Fen Xue
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Duanshu Li
- Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Chaosu Hu
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Zhuoying Wang
- Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Xiayun He
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Yi Wu
- Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center, Shanghai, China
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Yu MG, Rivera J, Jimeno C. Poorly Differentiated Thyroid Carcinoma: 10-Year Experience in a Southeast Asian Population. Endocrinol Metab (Seoul) 2017; 32:288-295. [PMID: 28685518 PMCID: PMC5503875 DOI: 10.3803/enm.2017.32.2.288] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 03/27/2017] [Accepted: 05/08/2017] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND No previous studies have been published on poorly differentiated thyroid carcinoma (PDTC) in Southeast Asia. METHODS We included all adult PDTC patients diagnosed using the Turin criteria at the Philippine General Hospital from 2006 to 2015. The data collected included demographics, clinical presentation, histopathology, treatment, and outcomes. Tests of association were employed to compare these data with foreign studies on PDTC, as well as with local studies on well differentiated thyroid carcinoma (WDTC) and anaplastic thyroid carcinoma (ATC). RESULTS Eighteen PDTC cases were identified. The median age was 62 years old, with the majority being females. All patients had goiter on presentation, and most were stage IV at the time of diagnosis. In terms of PDTC subtype, insular and trabecular patterns were equally common. Extrathyroidal extension was documented in eight patients, while five patients each had nodal and distant metastasis. All but one patient underwent surgery; however, less than half received adjuvant radioiodine therapy. The 5-year survival rate was 83%. Three patients (16.7%) died at a median of 12 months after diagnosis. Nine (50%) are still alive with persistent and/or recurrent disease at a median of 39 months after diagnosis. CONCLUSION The behavior of PDTC in this Southeast Asian population was found to be similar to patterns observed in other regions, and exhibited intermediate features between WDTC and ATC. Appropriate surgery provided excellent 5-year survival rates, but the role of adjuvant therapy remains unclear. Larger studies are needed to identify prognostic factors in this population.
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Affiliation(s)
- Marc Gregory Yu
- Section of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Philippine General Hospital, Manila, Philippines.
| | - Jonathan Rivera
- Department of Pathology, Philippine General Hospital, Manila, Philippines
| | - Cecilia Jimeno
- Section of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Philippine General Hospital, Manila, Philippines
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Feffer JB, Usera GL, Schulman RC. Unilateral Exophthalmos Due To Metastasis Of Poorly Differentiated Thyroid Carcinoma To The Left Sphenoid Wing With Intra-Orbital Extension. AACE Clin Case Rep 2017. [DOI: 10.4158/ep161276.cr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Lei S, Ding Z, Ge J, Zhao D. Association between prognostic factors and clinical outcome of well-differentiated thyroid carcinoma: A retrospective 10-year follow-up study. Oncol Lett 2015; 10:1749-1754. [PMID: 26622744 DOI: 10.3892/ol.2015.3416] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Accepted: 03/02/2015] [Indexed: 11/06/2022] Open
Abstract
Differentiated thyroid carcinoma (DTC) is one of the most common metabolic disorders and accounts for 98% of all cases of thyroid cancer. Previously, a number of studies have investigated the prognostic factors associated with well-differentiated thyroid carcinoma (WDTC); however, these studies yielded conflicting results. The current study used a retrospective study design to collect data from WDTC patients who had received the same treatment regimen from the same institute, with a minimum follow-up of 10 years. The De Groot staging system was used to classify WDTC in a total of 320 patients (240 females and 80 males). Among the subjects, the pathological subtypes identified were as follows: Papillary carcinoma (240 cases, 75%), follicular carcinoma (67 cases, 21%) and Hürthle cell carcinoma (13 cases, 4%). Prognostic factors that significantly affected the clinical outcome of the disease were advanced age (P=0.001), tumor size (P=0.03), presence of thyroglobulin (P=0.001) and De Groot stage (P=0.005). The 10-year follow-up study revealed that WDTC is associated with a high survival rate of 96% (307/320 patients survived) and a low mortality rate (4%).
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Affiliation(s)
- Shangtong Lei
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Zihai Ding
- Anatomical Institute of Minimally Invasive Surgery, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Junna Ge
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
| | - Donghui Zhao
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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Cherkaoui GS, Guensi A, Taleb S, Idir MA, Touil N, Benmoussa R, Baroudi Z, Chikhaoui N. Poorly differentiated thyroid carcinoma: a retrospective clinicopathological study. Pan Afr Med J 2015; 21:137. [PMID: 26327974 PMCID: PMC4546773 DOI: 10.11604/pamj.2015.21.137.6720] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Accepted: 05/19/2015] [Indexed: 11/11/2022] Open
Abstract
Poorly differentiated thyroid carcinoma (PDTC) is an independent thyroid cancer histotype. In spite of its scarcity, it represents the main cause of death from non-anaplastic follicular cell-derived thyroid cancer. However, given the newness of this entity, few data are available on its clinical behaviour and no explicit consensus sets its treatment. To report the experience of a tertiary medical centre in morocco with PDTC over a period of 7 years. Retrospective study selecting all patients treated for thyroid carcinoma in Nuclear Medicine Department of a tertiary medical centre in Casablanca over seven years period. Patient's files were reviewed for background data, clinico-pathological characteristics, treatment and outcome. Seven patients were included in the study. Patient's average age was 60 years old (30-81) including six women and one man. All patients underwent a total thyroidectomy completed by cervical lymph node dissection in 57% of cases. Mean primary tumour size was 4cm (1-9cm). Patients were classified pT3 in 70% of cases, pT1 and pT2 in 15% each. Vascular invasion was found in 85% of cases. Pathological subtypes found were "insular carcinoma" in 85% of cases. Radioiodine therapy (RIT) was indicated in all cases. Follow-up period ranged between 10 months and 6 years. It showed a complete remission in 57% of cases, persistent disease in 28% of cases and a progressive disease in 15% of cases with a local recurrence. To date, the survival rate is 85%. PDTC is an aggressive thyroid cancer histotype. Treatment remains surgical followed by RIT if the tumour is radioavid. Multimodality therapy is indicated depending on the case and close monitoring is always indicated given the high risk of relapse.
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Affiliation(s)
- Ghofrane Salhi Cherkaoui
- Nuclear Medicine Department, Ibn Rochd University Hospital, Université Hassan II, Casablanca, Morocco
| | - Amal Guensi
- Nuclear Medicine Department, Ibn Rochd University Hospital, Université Hassan II, Casablanca, Morocco
| | - Sara Taleb
- Nuclear Medicine Department, Ibn Rochd University Hospital, Université Hassan II, Casablanca, Morocco
| | - Malika Ait Idir
- Nuclear Medicine Department, Ibn Rochd University Hospital, Université Hassan II, Casablanca, Morocco
| | - Najwa Touil
- Emergency Radiology Department, Ibn Rochd University Hospital, Université Hassan II Casablanca, Morocco
| | - Rita Benmoussa
- Emergency Radiology Department, Ibn Rochd University Hospital, Université Hassan II Casablanca, Morocco
| | - Zaineb Baroudi
- Emergency Radiology Department, Ibn Rochd University Hospital, Université Hassan II Casablanca, Morocco
| | - Nabil Chikhaoui
- Emergency Radiology Department, Ibn Rochd University Hospital, Université Hassan II Casablanca, Morocco
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Abstract
Thyroid nodules are common, and the accurate diagnosis of cancer or benign disease is important for the effective clinical management of patients. Molecular markers are a helpful diagnostic tool, particularly for cytologically indeterminate thyroid nodules. In the past few years, significant progress has been made in developing molecular markers for clinical use in fine-needle aspiration specimens, including gene mutation panels and gene expression classifiers. With the availability of next generation sequencing technology, gene mutation panels can be expanded to interrogate multiple genes simultaneously and to provide yet more accurate diagnostic information. In addition, recently several new molecular markers of thyroid cancer have been identified that offer diagnostic, prognostic, and therapeutic information that might be of value in guiding individualized management of patients with thyroid nodules.
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Affiliation(s)
- Susan J Hsiao
- Division of Molecular and Genomic PathologyDepartment of Pathology, University of Pittsburgh School of Medicine, 3477 Euler Way, Room 8031, Pittsburgh, Pennsylvania 15213, USA
| | - Yuri E Nikiforov
- Division of Molecular and Genomic PathologyDepartment of Pathology, University of Pittsburgh School of Medicine, 3477 Euler Way, Room 8031, Pittsburgh, Pennsylvania 15213, USA
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