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Oral cavity carcinoma

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https://www.readbyqxmd.com/read/28214216/cancer-stem-cell-cytokeratins-and-epithelial-to-mesenchymal-transition-markers-expression-in-oral-squamous-cell-carcinoma-derived-from-ortothopic-xenoimplantation-of-cd44-high-cells
#1
Nathália Paiva de Andrade, Maria Fernanda Setúbal Destro Rodrigues, Camila Oliveira Rodini, Fabio Daumas Nunes
Oral squamous cell carcinoma (OSCC) is the most prevalent neoplasia of oral cavity worldwide and prognosis remains unchanged in decades. Recently, different authors reported that head and neck squamous cell carcinomas have a subpopulation of tumor initiating cells that apparently correspond to cancer stem cells (CSC) and are also responsible for tumor growth and metastasis. The purpose of the present study was to investigate the microscopic and phenotypic characteristics of OSCC tumors induced after orthotopic xenoimplantation of SCC9(WT) cell line and CSC-enriched subpopulation isolated from SCC9 cell line based on high expression of the putative CSC marker CD44...
December 23, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28199413/low-prevalence-of-human-papillomavirus-in-head-and-neck-squamous-cell-carcinoma-in-the-northwest-region-of-the-philippines
#2
Pia Marie Albano, Dana Holzinger, Christianne Salvador, Jose Orosa, Sheryl Racelis, Modesty Leaño, Danilo Sanchez, Lara Mae Angeles, Gordana Halec, Markus Schmitt, John Donnie Ramos, Michael Pawlita
BACKGROUND: Geographic heterogeneity of human papillomavirus (HPV) involvement in head and neck squamous cell carcinoma (HNSCC) has been observed over the last few years. This trend has not been evaluated in the Philippines. Hence, this study aims to provide for the first time a data on the prevalence of HPV in HNSCC in the northwestern region of the Philippines. METHODS: Two hundred one (201) biopsy samples (179 formalin fixed paraffin embedded and 22 fresh frozen) from 163 Filipino HNSCC cases (oral cavity = 88; larynx = 60; oropharynx = 15) diagnosed between 2003 to 2013 were initially included in this study...
2017: PloS One
https://www.readbyqxmd.com/read/28196645/oral-squamous-cell-carcinoma-in-three-related-kowari-dasyuroides-byrnei
#3
Richard Saunders, Rowena Killick, Michelle Barrows, Mark Stidworthy
We report three kowari (Dasyuroides byrnei) with squamous cell carcinoma affecting the gingiva. These cases occurred in rapid succession in a related group of individuals of similar age, suggesting a familial tendency to this condition and a typical age of presentation. Other conditions affecting the oral cavity can mimic the appearance of oral squamous cell carcinoma in this species, and so knowledge of this condition can assist the veterinarian in making rapid decisions regarding prognosis and improving the welfare of these animals...
February 11, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28195637/sexual-and-relationship-health-among-survivors-of-oropharyngeal-or-oral-cavity-squamous-cell-carcinoma
#4
EDITORIAL
Gypsyamber D'Souza, Hilary A Robbins
No abstract text is available yet for this article.
February 14, 2017: Cancer
https://www.readbyqxmd.com/read/28173873/microbiomic-differences-in-tumor-and-paired-normal-tissue-in-head-and-neck-squamous-cell-carcinomas
#5
Hannah Wang, Pauline Funchain, Gurkan Bebek, Jessica Altemus, Huan Zhang, Farshad Niazi, Charissa Peterson, Walter T Lee, Brian B Burkey, Charis Eng
BACKGROUND: While the role of the gut microbiome in inflammation and colorectal cancers has received much recent attention, there are few data to support an association between the oral microbiome and head and neck squamous cell carcinomas. Prior investigations have been limited to comparisons of microbiota obtained from surface swabs of the oral cavity. This study aims to identify microbiomic differences in paired tumor and non-tumor tissue samples in a large group of 121 patients with head and neck squamous cell carcinomas and correlate these differences with clinical-pathologic features...
February 7, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28166075/clinico-histopathological-survey-of-head-and-neck-cancer-at-tertiary-health-care-centre-dhulikhel-hospital
#6
S Dixit, C Upadhyaya, M Humagain, R Srii, V Marla
Background Head and neck is one of the most prevalent site for cancers along with lungs, cervix, breast and stomach. Hospital based cancer registries required for effective evaluation of diagnosis and management of cancer is inadequate in Nepal. Cancer registry system established by WHO is acquired by seven major hospitals in our country. However, data from tertiary health care centres like ours remain undocumented. Objective The objective of this study is to perform retrospective analysis of clinicohistopathological types of head and neck lesions which were eventually diagnosed as cancer in Dhulikel Hospital, a tertiary health care centre of Central East Nepal...
April 2016: Kathmandu University Medical Journal (KUMJ)
https://www.readbyqxmd.com/read/28165332/exhaled-breath-and-oral-cavity-vocs-as-potential-biomarkers-in-oral-cancer-patients
#7
Marcos Bouza, Jesus Gonzalez-Soto, Rosario Pereiro, Juan Carlos de Vicente, Alfredo Sanz-Medel
Corporal mechanisms attributed to cancer, such as oxidative stress or the action of cytochrome P450 enzymes, seem to be responsible of the generation of a variety of volatile organic compounds (VOCs) that could be used as non-invasive diagnosis biomarkers. The present work presents an attempt of using VOCs from exhaled breath and oral cavity air as biomarkers for oral squamous cell carcinoma (OSCC) patients. 52 breath samples were collected (3 L Tedlar bags) from 26 OSCC patients and 26 cancer-free controls...
February 6, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28160595/salivary-mmp-9-in-the-detection-of-oral-squamous-cell-carcinoma
#8
A Peisker, G-F Raschke, M-D Fahmy, A Guentsch, K Roshanghias, J Hennings, S Schultze-Mosgau
BACKGROUND: Oral squamous cell carcinoma (OSCC) is the most common malignant tumour of the oral cavity. Detection of OSCC is currently based on clinical oral examination combined with histopathological evaluation of a biopsy sample. Direct contact between saliva and the oral cancer makes measurement of salivary metalloproteinase-9 (MMP-9) an attractive alternative. MATERIAL AND METHODS: In total, 30 OSCC patients and 30 healthy controls were included in this prospective study...
February 4, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28159583/intraoperative-gross-examination-vs-frozen-section-for-achievement-of-adequate-margin-in-oral-cancer-surgery
#9
Manish Mair, Deepa Nair, Sudhir Nair, Sourav Dutta, Apoorva Garg, Akshat Malik, Aseem Mishra, Rathan Shetty Ks, Pankaj Chaturvedi
OBJECTIVE: Surgical margin status is an important prognostic factor in oral squamous cell carcinoma. The primary aim of the surgeon is to achieve a microscopically complete surgical resection during initial surgery. As there are no definite guidelines, a few surgeons use frozen section (FS) for margin assessment whereas others use gross examination (GE). STUDY DESIGN: This is a retrospective analysis of prospectively collected data from the electronic medical records of 435 oral cavity cancer patients...
December 7, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28153128/intraoperative-margin-assessment-in-early-oral-squamous-cell-carcinoma
#10
REVIEW
Simion I Chiosea
The surgical method of margin sampling affects local control, pathologists' approach to margin sampling, and clarity of pathology reports. Studies have shown that exclusive reliance on tumor bed margins is associated with worse local control and should be avoided. En bloc resections and margins obtained from the resection specimen remain the "gold standard." Successful surgical treatment of early carcinomas of the oral cavity relies on close cooperation between surgeons and pathologists on issues of specimen orientation and margin sampling...
March 2017: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/28151720/biomarker-and-tumor-responses-of-oral-cavity-squamous-cell-carcinoma-to-trametinib-a-phase-ii-neoadjuvant-window-of-opportunity-clinical-trial
#11
Ravindra Uppaluri, Ashley E Winkler, Tianxiang Lin, Jonathan H Law, Bruce H Haughey, Brian Nussenbaum, Randal C Paniello, Jason T Rich, Jason A Diaz, Loren S Michel, Tanya Wildes, Gavin P Dunn, Paul Zolkind, Dorina Kallogjeri, Jay F Piccirillo, Farrokh Dehdashti, Barry A Siegel, Rebecca D Chernock, James S Lewis, Douglas R Adkins
PURPOSE: Ras/MEK/ERK pathway activation is common in oral cavity squamous cell carcinoma (OCSCC). We performed a neoadjuvant (pre-operative) trial to determine biomarker and tumor response of OCSCC to MEK inhibition with trametinib. EXPERIMENTAL DESIGN: Patients with Stage II-IV OCSCC received trametinib (2 mg/day, minimum 7 days) prior to surgery. Primary tumor specimens were obtained before and after trametinib to evaluate immunohistochemistry staining for p-ERK½ and CD44, the primary endpoint...
November 9, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28150306/adjuvant-radiotherapy-is-not-supported-in-patients-with-verrucous-carcinoma-of-the-oral-cavity
#12
Suresh Mohan, Sara I Pai, Neil Bhattacharyya
OBJECTIVE: To analyze the impact of adjuvant radiation therapy (RT) on overall survival (OS) and disease-specific survival (DSS) in patients with verrucous carcinoma (VC) as compared to squamous cell carcinoma (SCC) of the oral cavity. STUDY DESIGN: Cross-sectional population analysis. METHODS: Cases of nonmetastatic VC/SCC of the oral cavity were extracted from the Surveillance, Epidemiology, and End Results (SEER) database (1988-2013). Kaplan-Meier survivals, stratified according to T stage, were compared between VC and SCC for treatment with or without adjuvant RT...
February 1, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28135012/dna-ploidy-and-cell-cycle-protein-expression-in-oral-squamous-cell-carcinomas-with-and-without-lymph-node-metastases
#13
Ibtisam M Zargoun, L Bingle, P M Speight
BACKGROUND: Oral squamous cell carcinoma (OSCC) is the most frequently occurring malignant tumour in the oral cavity. OSCC arises because of multiple genetic alterations. Cell cycle aberrations and aneuploidy are reportedly among the main characteristics of cancer cells and are associated with aggressive growth and poor prognosis. METHODS: The study sample included 47 non-metastasised (NM) and 39 metastasised (M) primary OSCC, with matched positive cervical lymph nodes (LN) and 17 normal oral mucosa (NOM) samples...
January 30, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28131848/dehydroandrographolide-inhibits-oral-cancer-cell-migration-and-invasion-through-nf-%C3%AE%C2%BAb-ap-1-and-sp-1-modulated-matrix-metalloproteinase-2-inhibition
#14
Ming-Ju Hsieh, Jui-Chieh Chen, Wei-En Yang, Su-Yu Chien, Mu-Kuan Chen, Yu-Sheng Lo, Yi-Ting Hsi, Yi-Ching Chuang, Chia-Chieh Lin, Shun-Fa Yang
BACKGROUND AND PURPOSE: Oral cancer is a type of head and neck cancer that is characterized by cancerous tissue growth in the oral cavity. Andrographolide and dehydroandrographolide (DA) are the two principal components of Andrographis paniculata (Burm.f.) Nees and are the main contributors to its therapeutic properties. However, the pharmacological activities of DA remain unclear. EXPERIMENTAL APPROACH: In this study, we used wound closure assay and Boyden chamber assay to determine the effects of DA on oral cancer cell migration and invasion...
January 25, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28128848/head-and-neck-cancers-major-changes-in-the-american-joint-committee-on-cancer-eighth-edition-cancer-staging-manual
#15
William M Lydiatt, Snehal G Patel, Brian O'Sullivan, Margaret S Brandwein, John A Ridge, Jocelyn C Migliacci, Ashley M Loomis, Jatin P Shah
Answer questions and earn CME/CNE The recently released eighth edition of the American Joint Committee on Cancer (AJCC) Staging Manual, Head and Neck Section, introduces significant modifications from the prior seventh edition. This article details several of the most significant modifications, and the rationale for the revisions, to alert the reader to evolution of the field. The most significant update creates a separate staging algorithm for high-risk human papillomavirus-associated cancer of the oropharynx, distinguishing it from oropharyngeal cancer with other causes...
January 27, 2017: CA: a Cancer Journal for Clinicians
https://www.readbyqxmd.com/read/28114406/identification-of-hpv-types-and-mycobacterium-tuberculosis-complex-in-historical-long-term-preserved-formalin-fixed-tissues-in-different-human-organs
#16
Maja Hühns, Andreas Erbersdobler, Annette Obliers, Paula Röpenack
University anatomical-pathological collections represent huge sources of human tissues and preparations from a variety of different diseases. With the help of modern genetic and histological methods, preserved fixed tissues from pathological collections can be used to re-evaluate former diagnoses. We analysed 25 specimens from our pathological collection with ages ranging from 78 to 112 years. The tissues originated from the oral cavity, lip, tongue, lung, bone, kidney, spleen, thymus, larynx, lymph node, penis and uterine cervix with an original diagnosis of epithelial cancers or tuberculosis...
2017: PloS One
https://www.readbyqxmd.com/read/28110186/numb-chin-syndrome-as-a-sign-of-mandibular-metastasis-a-case-report
#17
Thomas Aerden, Koenraad Grisar, Patrick Neven, Esther Hauben, Constantinus Politis
INTRODUCTION: Metastasis to the oral cavity can be located in both the soft and bony tissues and comprise only 1% of all oral malignancies; however, it is clinically significant because it indicates widespread metastatic disease and an unfavorable prognosis. A numb chin is an important presentation of oral metastasis, but other dental and systemic pathology may be involved. PRESENTATION OF CASE: We present the case of a 54-year-old woman who presented with numb chin syndrome 8 years after a diagnosis of primary breast carcinoma...
January 4, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28108990/geographic-heterogeneity-in-the-prevalence-of-human-papillomavirus-in-head-and-neck-cancer
#18
Devasena Anantharaman, Behnoush Abedi-Ardekani, Daniel C Beachler, Tarik Gheit, Andrew F Olshan, Kathy Wisniewski, Victor Wunsch-Filho, Tatiana N Toporcov, Eloiza H Tajara, José Eduardo Levi, Raquel A Moyses, Stefania Boccia, Gabriella Cadoni, Guido Rindi, Wolfgang Ahrens, Franco Merletti, David I Conway, Sylvia Wright, Christine Carreira, Helene Renard, Priscilia Chopard, Sandrine McKay-Chopin, Ghislaine Scelo, Massimo Tommasino, Paul Brennan, Gypsyamber D'Souza
Human papillomavirus (HPV) causes oropharyngeal squamous cell carcinoma (OPSCC), although strongly divergent results have been reported regarding the prevalence of HPV16 in different countries, whether this represents important differences in etiology remains unclear. Applying rigorous protocols for sample processing, we centrally evaluated 1420 head and neck tumors (533 oropharynx, 395 oral cavity and 482 larynx) from studies conducted in the US, Europe and Brazil for mucosal HPV DNA and p16(INK4a) expression to evaluate regional heterogeneity in the proportion of HPV16-associated OPSCC and other head and neck cancer, and to assess covariates associated with the risk of HPV16-positive OPSCC...
January 20, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28108239/preoperative-ultrasonography-for-evaluation-of-clinically-n0-neck-in-oral-cavity-carcinoma
#19
Angel Rollon-Mayordomo, Teresa Creo-Martinez, Yolanda Marin-Lapeira, Juan-Andres Rodriguez-Ruiz, Pedro Infante-Cossio
The aim of this study was to evaluate preoperative ultrasound criteria to detect lymph node (LN) cervical metastasis in patients with clinically node-negative neck (cN0) oral cavity squamous cell carcinoma (OCSCC). A prospective, single-center, observational study was conducted in 90 patients undergoing cancer excision with or without elective neck dissection (END) between 2005 and 2012. A surgeon and an experienced radiologist performed preoperative cervical ultrasonography in all cases. The primary objective was to obtain an a priori sensitivity of 90% and specificity >50% in cN0 OCSCC staging...
December 21, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28108238/effect-of-an-evidence-based-guideline-on-the-treatment-of-maxillofacial-cancer-a-prospective-analysis
#20
Klaus-Dietrich Wolff, Andrea Rau, Julia Ferencz, Thomas Langer, Marco Kesting, Markus Nieberler, Simone Wesselmann
BACKGROUND: In 2012, a guideline for the diagnosis and treatment of oral cavity cancer based on the best available evidence was implemented at certified German cancer centres for head and neck carcinomas. The present analysis was performed to determine whether the implementation of the guideline via certification improved the level of care, leading to a benefit for the patients. METHODS: A prospective observational study was performed based on the annual operating figures at 31 certified head and neck cancer centres...
December 20, 2016: Journal of Cranio-maxillo-facial Surgery
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