1,843 results match your criteria Malignant Nasopharyngeal Tumors

[Dermatomyositis as a paraneoplastic syndrome of head-neck-cancer: Case series & literature review].

Laryngorhinootologie 2021 Apr 27. Epub 2021 Apr 27.

Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Klinik für Hals-Nasen-Ohrenheilkunde, Campus Benjamin Franklin.

Introduction:  Dermatomyositis (DM) is a rare disease with the clinical manifestation of weakness and pain of proximal muscles as well as lilac-coloured skin lesions. One fifth of the cases is associated with the occurrence of a malignant tumor disease. The aim of this study is to evaluate the relevance of DM as a paraneoplastic syndrome in head and neck cancer taken into account the current literature. Read More

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Foxq1 promotes metastasis of nasopharyngeal carcinoma by inducing vasculogenic mimicry via the EGFR signaling pathway.

Cell Death Dis 2021 Apr 19;12(5):411. Epub 2021 Apr 19.

Otorhinolaryngology Head and Neck Surgery, Nanfang Hospital of Southern Medical University, Guangzhou, China.

In nasopharyngeal carcinoma (NPC), the treatment of tumor metastasis and recurrence is challenging and is associated with poor clinical efficacy. Vasculogenic mimicry (VM) is a new blood-supply model of malignant tumor that is closely related to tumors' distant metastasis. Our previous study demonstrated that miR-124 could target Foxq1 to inhibit NPC metastasis. Read More

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Unusual Presentation of a Sphenoidal Sinus Neuroendocrine Tumor: A Case Report and Review of Literature.

Cureus 2021 Mar 4;13(3):e13689. Epub 2021 Mar 4.

Hematology and Medical Oncology, Saint Joseph Mercy Oakland Hospital, Pontiac, USA.

Neuroendocrine tumors (NETs) have a heterogeneous pathology and indolent behavior, with the most common location being the gastrointestinal tract and then the lungs. The head and neck are rare sites of NET presentation with varied clinical signs and symptoms, which occasionally delay the diagnosis, thereby leading to an advanced stage at presentation. We present a rare case of paranasal sinus small cell neuroendocrine tumor and perform a review of the literature. Read More

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Rare tumors: Retinoblastoma, nasopharyngeal cancer, and adrenocorticoid tumors.

Pediatr Blood Cancer 2021 May;68 Suppl 2:e28253

Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee.

The role of surgery, chemotherapy, and radiation therapy for retinoblastoma has evolved considerably over the years with the efficacy of intraarterial chemotherapy and the high incidence of secondary malignant neoplasms following radiation therapy. The use of spot scanning intensity-modulated proton therapy may reduce the risk of secondary malignancies. For pediatric nasopharyngeal carcinoma, the current standard of care is induction chemotherapy followed by chemoradiation therapy. Read More

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The Effect of Hispidulin, a Flavonoid from , on Human Nasopharyngeal Carcinoma CNE-2Z Cell Proliferation, Migration, Invasion, and Apoptosis.

Molecules 2021 Mar 14;26(6). Epub 2021 Mar 14.

School of Pharmacy, Bengbu Medical College, 2600 Donghai Road, Bengbu 233030, China.

Nasopharyngeal carcinoma (NPC) is a common malignant head and neck tumor. Drug resistance and distant metastasis are the predominant cause of treatment failure in NPC patients. Hispidulin is a flavonoid extracted from the bioassay-guided separation of the EtOH extract of with strong anti-proliferative activity in nasopharyngeal carcinoma cells (CNE-2Z). Read More

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Comprehensive single-cell sequencing reveals the stromal dynamics and tumor-specific characteristics in the microenvironment of nasopharyngeal carcinoma.

Nat Commun 2021 03 9;12(1):1540. Epub 2021 Mar 9.

Department of Clinical Oncology, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China.

The tumor microenvironment (TME) of nasopharyngeal carcinoma (NPC) harbors a heterogeneous and dynamic stromal population. A comprehensive understanding of this tumor-specific ecosystem is necessary to enhance cancer diagnosis, therapeutics, and prognosis. However, recent advances based on bulk RNA sequencing remain insufficient to construct an in-depth landscape of infiltrating stromal cells in NPC. Read More

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The Current Role of Adjuvant Chemotherapy in Locally Advanced Nasopharyngeal Carcinoma.

Front Oncol 2020 24;10:585046. Epub 2021 Feb 24.

Department of Oncology, Xiangya Hospital, Central South University, Changsha, China.

Nasopharyngeal carcinoma (NPC) is one of the most common malignant tumors of the head and neck, and it originates from the mucous epithelium of the nasopharynx. Because it is "hidden", the symptoms of NPC can easily be missed, and more than 70% of patients present with locally advanced disease at diagnosis. Concurrent radiation therapy with chemotherapy can significantly improve regional control of NPC. Read More

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February 2021

PEDF inhibits lymphatic metastasis of nasopharyngeal carcinoma as a new lymphangiogenesis inhibitor.

Cell Death Dis 2021 Mar 17;12(4):295. Epub 2021 Mar 17.

Program of Molecular Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.

Nasopharyngeal carcinoma (NPC) is one of the most malignant tumors in southern China and Asia, and lymph node metastasis is an important cause for treatment failure. Lymphangiogenesis is a crucial step in lymphatic metastasis of NPC, while little is known about lymphangiogenesis in NPC. Similar to angiogenesis, lymphangitic neovascularization is a process of balance between pro-lymphangiogenesis and anti-lymphangiogenesis factors, but there are few studies on endogenous lymphangiogenesis inhibitors. Read More

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Lesions that mimic malignant tumors in nasopharyngeal biopsies: case series of 10 years.

Tumori 2021 Mar 17:3008916211001441. Epub 2021 Mar 17.

Department of Otorhinolaryngology, Faculty of Medicine, Uludag University, Bursa, Turkey.

Introduction: Lesions mimicking malignancies in the nasopharynx are frequently seen in adult patients. These include inflammatory, metaplastic, and cystic lesions. We aimed to draw attention to rare tumor-like lesions that can be confused with malignancies and cause diagnostic difficulties clinically and radiologically. Read More

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Unenhanced CT texture analysis with machine learning for differentiating between nasopharyngeal cancer and nasopharyngeal malignant lymphoma.

Nagoya J Med Sci 2021 Feb;83(1):135-149

Department of Radiology, Graduate School of Medical Science, University of the Ryukyus, Nishihara, Japan.

Differentiating between nasopharyngeal cancer and nasopharyngeal malignant lymphoma (ML) remains challenging on cross-sectional images. The aim of this study is to investigate the usefulness of texture features on unenhanced CT for differentiating between nasopharyngeal cancer and nasopharyngeal ML. Thirty patients with nasopharyngeal tumors, including 17 nasopharyngeal cancers and 13 nasopharyngeal MLs, were underwent F-FDG PET/CT. Read More

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February 2021

Review of Pediatric Head and Neck Neoplasms that Raise the Possibility of a Cancer Predisposition Syndrome.

Head Neck Pathol 2021 Mar 15;15(1):16-24. Epub 2021 Mar 15.

Department of Pathology, Texas Childrens Hospital, 6621 Fannin St, Houston, TX, 77030, USA.

Cancer predisposition syndromes (CPS) are generally heritable conditions that predispose individuals to develop cancer at a higher rate and younger age than their representative general population. They are a significant cause of cancer related morbidity and mortality in the pediatric population. Therefore, recognition of lesions that may be associated with a CPS and alerting the clinicians to its implications is a crucial task for a diagnostic pathologist. Read More

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miR-1254 induced by NESG1 inactivates HDGF/DDX5-stimulated nuclear translocation of β-catenin and suppresses NPC metastasis.

Mol Ther Methods Clin Dev 2021 Mar 4;20:615-624. Epub 2021 Feb 4.

Cancer Center, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China.

Nasopharyngeal carcinoma (NPC) is one of the most common malignant tumors in Chinese and other Southeast Asians. We aimed to explore the precise mechanism for NESG1 in NPC for understanding the pathogenesis of NPC. Transwell, Boyden assays, and wounding healing were respectively performed for cell metastasis. Read More

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Heterochronic triple primary malignancies with Epstein-Barr virus infection and tumor protein 53 gene mutation: A case report and review of literature.

World J Clin Cases 2021 Feb;9(5):1184-1195

Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, China.

Background: The diagnosis and etiology of multiple primary malignant neoplasms (MPMNs) are difficult to establish. Here, we report a case of heterochronic triple primary malignancies with gastric cancer, nasopharyngeal squamous cell cancer, and then rectal cancer.

Case Summary: The patient was first diagnosed with gastric cancer at the age of 33 in 2014 and underwent distal gastrectomy and gastrojejunostomy and six cycles of adjuvant chemotherapy. Read More

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February 2021

Clinical Utility of Ga-DOTANOC Positron Emission Tomography-Computed Tomography Scan on Postoperative Assessment of Juvenile Nasal Angiofibroma.

Indian J Nucl Med 2020 Oct-Dec;35(4):372-373. Epub 2020 Oct 21.

Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, India.

Somatostatin cell surface receptors are expressed on the peritumoral vessels of various benign and malignant neoplasms including angiofibromas. Positive initial uptake on positron emission tomography-computed tomography (PET/CT) imaging with Ga-labeled DOTANOC is noted in a patient with juvenile nasal angiofibroma (JNA), and the same is noted to be absent following complete surgical excision. Functional Ga-DOTANOC PET/CT may be an early useful tool for JNA residual/recurrence identification and precise postoperative surveillance. Read More

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October 2020

Manuscript title: the maxillary swing approach - the first Scandinavian experience.

Acta Otolaryngol 2021 May 27;141(5):519-530. Epub 2021 Feb 27.

Department of Otorhinolaryngology, Head and Neck Surgery and Audiology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.

Background: The maxillary swing approach was introduced three decades ago in the head and neck field providing optimal surgical exposure for tumors in the nasopharyngeal and/or the retromaxillary space.

Objectives: To report the clinical experience, patient surgical morbidity and survival outcomes following the introduction of the maxillary swing approach in Denmark.

Material And Methods: A retrospective study including patients who underwent the maxillary swing approach from January 2012 - January 2020. Read More

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Fusion 68Ga-DOTANOC PET/MRI in Primary Juvenile Nasal Angiofibroma.

Clin Nucl Med 2021 Feb 20. Epub 2021 Feb 20.

From the Departments of Otorhinolaryngology and Head and Neck Surgery Nuclear Medicine Radiology, All India Institute of Medical Sciences, New Delhi, India.

Abstract: Somatostatin cell surface receptors are expressed in many different benign and malignant tumors and are often exploited for imaging and therapy of neuroendocrine tumors. A 17-year-old adolescent boy with clinicoradiologically diagnosed JNA (juvenile nasopharyngeal angiofibroma) also underwent 68Ga-DOTANOC PET to explore somatostatin cell surface receptors' expression and its theranostic potential. Fusion PET/MRI, a novel imaging technology, exactly depicted the anatomical extensions of the tumor with avid DOTANOC uptake. Read More

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February 2021

ER resident protein 44 promotes malignant phenotype in nasopharyngeal carcinoma through the interaction with ATP citrate lyase.

J Transl Med 2021 02 16;19(1):77. Epub 2021 Feb 16.

Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China.

Background: Nasopharyngeal carcinoma (NPC) is one of the most common malignancy in head and neck. With the development of treatments, the prognosis has improved these years, but metastasis is still the main cause of treatment failure. The endoplasmic reticulum (ER) resident protein 44 is a UPR-induced ER protein of the protein disulphide isomerase (PDI) family. Read More

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February 2021

PADI4, negatively regulated by miR-335-5p, participates in regulating the proliferation, migration, invasion and radiosensitivity of nasopharyngeal carcinoma cells.

J Biol Regul Homeost Agents 2021 Jan-Feb;35(1):117-129

Department of Oncology, Nanning The Second People's Hospital, Nanning, Guangxi, China.

Peptidyl arginine deiminase 4 (PADI4), an enzyme that converts arginine residues to citrulline residues in the presence of calcium ions, affects the biochemical activities of proteins. The biological function of PADI4 as well as its mechanism in nasopharyngeal carcinoma (NPC) necessitates further investigation. PADI4 expression in NPC tissues and cells was detected using Western blot. Read More

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Pulmonary lymphoepithelioma-like carcinoma: A case report with emphasis on computed tomography findings.

Medicine (Baltimore) 2021 Feb;100(5):e24453

Department of Radiology, Pidu District People's Hospital.

Rationale: Pulmonary lymphoepithelioma-like carcinoma (PLELC) is a rare type of primary malignant lung tumor characterized by Epstein-Barr virus infection, with, to the authors' knowledge, a total of only 500 reported cases during the past 30 years worldwide. Histologically, PLELC is similar to undifferentiated nasopharyngeal carcinoma and poorly differentiated squamous cell carcinoma. However, although PLELC accounts for <1% of all lung cancers, it has a better prognosis and is usually detected in non-smokers and individuals of Asian ancestry. Read More

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February 2021

lncRNA CASC19 Contributes to Radioresistance of Nasopharyngeal Carcinoma by Promoting Autophagy via AMPK-mTOR Pathway.

Int J Mol Sci 2021 Jan 30;22(3). Epub 2021 Jan 30.

Institute of Radiation Medicine, Shanghai Medical College, Fudan University, Shanghai 200032, China.

Nasopharyngeal carcinoma (NPC) is one of the most frequent head and neck malignant tumors and is majorly treated by radiotherapy. However, radiation resistance remains a serious obstacle to the successful treatment of NPC. The aim of this study was to discover the underlying mechanism of radioresistance and to elucidate novel genes that may play important roles in the regulation of NPC radiosensitivity. Read More

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January 2021

LINC00667 Sponges miR-4319 to Promote the Development of Nasopharyngeal Carcinoma by Increasing FOXQ1 Expression.

Front Oncol 2020 25;10:632813. Epub 2021 Jan 25.

Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China.

Accumulating evidence has indicated that lncRNAs regulate various biological and pathological processes in diverse malignant tumors. The roles of LINC00667 in cancer development have been explored in glioma, hepatocellular carcinoma and non-small cell lung cancer, but not in nasopharyngeal carcinoma (NPC). In the present study, we characterize the role and molecular mechanism of LINC00667 in NPC progression. Read More

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January 2021

Tumour heterogeneity and intercellular networks of nasopharyngeal carcinoma at single cell resolution.

Nat Commun 2021 02 2;12(1):741. Epub 2021 Feb 2.

Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, 510060, People's Republic of China.

The heterogeneous nature of tumour microenvironment (TME) underlying diverse treatment responses remains unclear in nasopharyngeal carcinoma (NPC). Here, we profile 176,447 cells from 10 NPC tumour-blood pairs, using single-cell transcriptome coupled with T cell receptor sequencing. Our analyses reveal 53 cell subtypes, including tumour-infiltrating CD8 T, regulatory T (Treg), and dendritic cells (DCs), as well as malignant cells with different Epstein-Barr virus infection status. Read More

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February 2021

EMT-associated microRNAs and their roles in cancer stemness and drug resistance.

Cancer Commun (Lond) 2021 Mar 27;41(3):199-217. Epub 2021 Jan 27.

Department of Traditional Chinese Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, P. R. China.

Epithelial-to-mesenchymal transition (EMT) is implicated in a wide array of malignant behaviors of cancers, including proliferation, invasion, and metastasis. Most notably, previou studies have indicated that both cancer stem-like properties and drug resistance were associated with EMT. Furthermore, microRNAs (miRNAs) play a pivotal role in the regulation of EMT phenotype, as a result, some miRNAs impact cancer stemness and drug resistance. Read More

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Ent-11α-hydroxy-15-oxo-kaur-16-en-19-oic acid loaded onto fluorescent mesoporous silica nanoparticles for the location and therapy of nasopharyngeal carcinoma.

Analyst 2021 Mar;146(5):1596-1603

Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, China-America Cancer Research Institute, Guangdong Medical University, Dongguan 523808, China.

Ent-11α-hydroxy-15-oxo-kaur-16-en-19-oic acid (5F) is a diterpenoid that is isolated and purified from the Chinese herbal medicine Pteris semipinnata L., and is known to exert antitumour activity in several kinds of malignant cancer cells by leading cancer cells to apoptosis. However, the antitumour effect of 5F in vivo is rarely reported due to the complexity of the physiological environment and limitations of 5F as a small anticancer drug. Read More

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Primary Olfactory Neuroblastoma of the Nasopharynx: A Case Report.

Ear Nose Throat J 2021 Jan 21:145561321989436. Epub 2021 Jan 21.

Department of Radiation Oncology, Shaoxing People's Hospital, Shaoxing Hospital of Zhejiang University, Zhejiang, China.

Olfactory neuroblastoma (ONB) is an ectodermal malignant tumor originating from the olfactory nerve epithelium of the nasal cavity and paranasal sinus. Olfactory neuroblastoma is a rare cancer, with an estimated incidence of 0.4 per million. Read More

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January 2021

Lymphoepithelioma-like carcinoma of the lung: a rare case report and review of the literature.

Tuberk Toraks 2020 Dec;68(4):453-457

Clinic of Pathology, Ankara Ataturk Chest Diseases and Chest Surgery Training and Research Hospital, Ankara, Turkey.

Lymphoepithelioma-like carcinoma (LELC), is a rare type of cancer and typically occurs in pharyngeal and foregut-derivative organs, Including the salivary glands, thymus, stomach and liver (1). Pulmonary LELC typically affects the young and non-smoking population, and is associated with Ebstein-Barr virus (EBV) infection (1,2). We present an rare case with a pulmonary mass on CT scan of the thorax, which was subsequently proved as a LELC of the lung and a brief review of the relevant literature. Read More

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December 2020

Persistent orofacial pain associated with nasopharyngeal extramedullary plasmacytoma.

Spec Care Dentist 2020 Sep 28;40(5):519-524. Epub 2020 Jul 28.

Department of Oral Medicine, University of Pennsylvania, School of Dental Medicine, Philadelphia, Pennsylvania.

Orofacial pain (OFP) disorders affect the maxillofacial complex and typically involve other locations in the head and neck. Common etiologies of OFP disorders include odontogenic sources, temporomandibular disorders, neuropathic pain, chemosensory disorders, and headaches. Less commonly, benign and malignant neoplasms can be associated with OFP complaints. Read More

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September 2020

Myoepithelial Carcinoma Ex Pleomorphic Adenoma of the Maxillary Sinus: A Case Report and Review of Literature.

Head Neck Pathol 2021 Jan 4. Epub 2021 Jan 4.

Department of Surgery and Biomedical Sciences, Section of Maxillo-Facial Surgery, University of Perugia, Piazzale Gambuli 1, 06129, Perugia, Italy.

Myoepithelial carcinoma ex pleomorphic adenoma is defined as a malignant epithelial neoplasm arising from a primary or recurrent benign pleomorphic adenoma. This type of tumor comprises 3.6% of all salivary gland tumors and 12% of malignant ones. Read More

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January 2021

Ga DOTANOC PET/CT Scan in Primary Juvenile Nasopharyngeal Angiofibroma - A Pilot Study.

Laryngoscope 2020 Dec 23. Epub 2020 Dec 23.

Department of Otorhinolaryngology & Head and Neck Surgery, All India Institute of Medical Sciences, New Delhi, India.

Objectives/hypothesis: Somatostatin receptors (SSTRs) are highly expressed in neuroendocrine tumors and is exploited for its imaging and treatment. SSTRs expression is also demonstrated in diverse benign and malignant tumor cell types and proliferating peri-tumoral vessels. Similarly, Juvenile Nasopharyngeal Angiofibroma (JNA) expresses different SSTRs and may be utilized for its imaging and treatment using DOTA, 1-Nal3-octreotide (DOTANOC)-PET/CT scan. Read More

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December 2020

Role of BamHI-A Rightward Frame 1 in Epstein-Barr Virus-Associated Epithelial Malignancies.

Biology (Basel) 2020 Dec 11;9(12). Epub 2020 Dec 11.

Universidad de Tarapacá, Arica 1000000, Chile.

Epstein-Barr virus (EBV) infection is associated with a subset of both lymphoid and epithelial malignancies. During the EBV latency program, some viral products involved in the malignant transformation of infected cells are expressed. Among them, the BamHI-A rightward frame 1 (BARF1) is consistently detected in nasopharyngeal carcinomas (NPC) and EBV-associated gastric carcinomas (EBVaGCs) but is practically undetectable in B-cells and lymphomas. Read More

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December 2020