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https://www.readbyqxmd.com/read/28730764/mtor-deregulation-in-oral-cavity-squamous-cell-carcinoma
#1
Nicholas S Mastronikolis, Evangelos Tsiambas, Theodoros A Papadas, Panagiotis P Fotiades, Athanasios T Papadas, Stylianos N Mastronikolis, Ioannis Kastanioudakis, Vasileios Ragos
Signal transduction pathways consist of a variety of inter- and intra-cellular molecules. They act as supporting mechanisms for cell survival and homeostasis. Among them, the phosphatidylinositol 3-kinase (PI3K)/tumor suppressor phosphatase and tensin homologue deleted on chromosome ten (PTEN)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) pathway plays a crucial role in regulating normal cell growth based on growth factor receptors (GFRs) interaction, including epidermal GFR (type II-HER2) and insulin GFR (IGF)...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28730763/dna-mismatch-repair-deficiency-in-lung-and-oral-cavity-carcinomas-the-role-of-histogenetic-origin
#2
Konstantina N Spetsotaki, Evangelos Tsiambas, Athanasios Stamatelopoulos, Panagiotis P Fotiades, Ioannis Kastanioudakis, Pericles Tomos, Vasileios Ragos
DNA mismatch repair system (DNA MMR) is a crucial genetic mechanism for DNA homeostasis in prokaryotic and eukaryotic cells. During DNA replication and also recombination, point intra-nucleotide errors including base deletion, insertion, and mis-incorporation happen. These raised abnormalities in the newly synthesized DNA strand could affect negatively the stability of the molecule and the function of the corresponding genes. DNA MMR proteins prevent these errors by recognizing and repairing them, securing directly the normal anatomy of the DNA double strand and indirectly the expression of the genes...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28727989/oral-papillomatosis-in-immunocompromised-patients-a-case-series-of-kidney-transplant-recipients-and-myelodysplastic-syndrome
#3
Eun-Jung Kwak, Yun Hee Choi, Wonse Park, Eunae Sandra Cho
Solitary papilloma is a human papillomavirus (HPV)-induced benign indolent epithelial tumor with limited growth, whereas papillomatosis is an entirely different entity. Papillomatosis requires attention because of its aggressive and recurrent clinical progress with risks of dysplastic and malignant transformation. Recurrent respiratory papillomatosis (RRP) has a high prevalence of dysplasia and reports of transformation to carcinoma-ex-papillomatosis, especially when associated with low-risk HPV type 11. Although papillomatosis seldom occurs in the oral cavity, this report describes 3 cases of oral papillomatosis in immunocompromised patients, with 1 case identified as having HPV type 11...
June 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28725300/epstein-barr-virus-ebv-associated-epithelial-and-non-epithelial-lesions-of-the-oral-cavity
#4
REVIEW
Kentaro Kikuchi, Harumi Inoue, Yuji Miyazaki, Fumio Ide, Masaru Kojima, Kaoru Kusama
Epstein-Barr virus (EBV) is known to be associated with the development of malignant lymphoma and lymphoproliferative disorders (LPDs) in immunocompromised patients. EBV, a B-lymphotropic gamma-herpesvirus, causes infectious mononucleosis and oral hairy leukoplakia, as well as various pathological types of lymphoid malignancy. Furthermore, EBV is associated with epithelial malignancies such as nasopharyngeal carcinoma (NPC), salivary gland tumor, gastric carcinoma and breast carcinoma. In terms of oral disease, there have been several reports of EBV-related oral squamous cell carcinoma (OSCC) worldwide...
August 2017: Japanese Dental Science Review
https://www.readbyqxmd.com/read/28724861/carcinoma-of-maxillary-gingiva-with-non-specific-cervical-lymph-node-swelling
#5
Masashi Migita, Shiro Shigematsu, Hitoshi Ohata, Takahiko Shibahara
Swelling of the cervical lymph nodes may indicate lymphadenitis, malignant lymphoma, or metastasis. Lymph nodes larger than 10 mm on computed tomography (CT) are strongly indicative of postoperative metastasis from carcinoma. Here, we report a case of large, inflamed lymph nodes mimicking metastasis. The patient was a 76-year-old woman who experienced discomfort in the left-side maxillary gingiva commencing in August 2011. By September, the area had become painful, causing her to visit the Tokyo Dental College Chiba Hospital, at which time a 75×50-mm swollen ulcer was observed in the maxillary gingiva on the left side...
2017: Bulletin of Tokyo Dental College
https://www.readbyqxmd.com/read/28724656/dietary-flavonoid-intake-reduces-the-risk-of-head-and-neck-but-not-esophageal-or-gastric-cancer-in-us-men-and-women
#6
Lucy Sun, Amy F Subar, Claire Bosire, Sanford M Dawsey, Lisa L Kahle, Thea P Zimmerman, Christian C Abnet, Ruth Heller, Barry I Graubard, Michael B Cook, Jessica L Petrick
Background: Flavonoids are bioactive polyphenolic compounds found in fruits, vegetables, and beverages of plant origin. Previous studies have shown that flavonoid intake reduces the risk of certain cancers; however, few studies to date have examined associations of flavonoids with upper gastrointestinal cancers or used prospective cohorts.Objective: Our study examined the association between intake of flavonoids (anthocyanidins, flavan-3-ols, flavanones, flavones, flavonols, and isoflavones) and risk of head and neck, esophageal, and gastric cancers...
July 19, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28722004/oral-gingival-metastasis-a-diagnostic-dilemma
#7
Nalini Aswath, Chandrakanth Balakrishnan, Vidyarani Shyamsundar, Sarumathi Thirrugnanamurthy
Oral cavity is a rare target for metastasis with an incidence of 1% among all oral cancers. In 24% of such cases, oral metastasis is the first indication of an undiagnosed primary. Metastatic oral malignancies have been reported in the mandible, tongue, and gingiva. Although gingival metastasis has been reported from lung, prostate, rectal carcinoma in men and carcinoma of breast, adrenal glands, and genitalia in females, gingival metastasis from carcinoma of the penis has not been reported. Herein, a case of metastatic gingival carcinoma that developed after extraction of teeth from primary carcinoma of the penis is presented...
May 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28721881/final-report-of-a-prospective-randomized-trial-to-evaluate-the-dose-response-relationship-for-postoperative-radiation-therapy-and-pathologic-risk-groups-in-patients-with-head-and-neck%C3%A2-cancer
#8
David I Rosenthal, Abdallah S R Mohamed, Adam S Garden, William H Morrison, Adel K El-Naggar, Mona Kamal, Randal S Weber, Clifton D Fuller, Lester J Peters
PURPOSE: To present the long-term and final report of a phase 3 trial designed to assess dose-response relationship for postoperative radiation therapy (PORT) and pathologic risk groups in head and neck cancer. METHODS AND MATERIALS: Patients who underwent primary surgery for American Joint Committee on Cancer stage III or IV squamous cell carcinoma of the oral cavity, oropharynx, hypopharynx, or larynx and who required PORT were eligible. Patients' primary sites and involved necks were independently assigned to higher- or lower-risk categories based on a cumulative point score representing increasing risk of recurrence...
August 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28718332/a-peculiar-form-of-breast-fat-necrosis-simulating-hyaline-ring-granuloma-so-called-pulse-granuloma-a-rare-complication-of-hyperparathyroidism
#9
Maria García-Martos, Angel Panizo-Santos
Pulse granuloma is a rare, foreign body inflammatory reaction that occurs mainly in the oral cavity. It is exceedingly rare elsewhere, with only isolated cases described in the literature. We report the case of a 79-year-old woman with a history of normocalcemic hyperparathyroidism who presented to our hospital with a painful 4-cm lump in the upper quadrants-upper outer quadrant of her left breast. The clinical and radiological (BIRADS-5) findings were indicative of a malignant lesion. However, core needle biopsy revealed features simulating hyaline ring granuloma (pulse granuloma-like)...
July 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28717958/-the-8th-edition-of-the-ajcc-cancer-staging-manual-updates-in-otorhinolaryngology-head-and-neck-surgery
#10
REVIEW
J Doescher, J A Veit, T K Hoffmann
BACKGROUND: The TNM system is an established tool for classification of solid tumors by means of tumor size and extent, the involvement of local lymph nodes, and the presence of distant metastases. The classification was established in order to visualize prognostic implications and to allow establishment of systematic therapeutic algorithms. Since the beginning of 2017 a revised version of the classification has applied. Particularly the classification of otorhinolaryngologic tumors has been thoroughly revised in the 8th edition, partly on the basis of new prognostically relevant parameters, such as infection with oncogenic human papillomavirus (HPV) subtypes...
July 17, 2017: HNO
https://www.readbyqxmd.com/read/28715521/association-of-number-of-dissected-lymph-nodes-with-survival-in-clinically-node-negative-oral-cavity-squamous-cell-carcinoma-patients-undergoing-primary-surgery-a-population-based-analysis
#11
Chiaojung Jillian Tsai, Junting Zheng, Zhigang Zhang, Nadeem Riaz, Shrujal S Baxi, Richard J Wong, Nancy Y Lee
No abstract text is available yet for this article.
July 13, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28713756/dental-invasion-by-adenoid-cystic-carcinoma-of-the-oral-cavity
#12
Marco Guzzo, Pasquale Quattrone, Roberto Bianchi, Sarah Colombo
Cancer progression through the mandible bone is still questioned. Once the tumor has eroded the cortex, it can extend vertically and laterally. It usually spreads in the medullary spaces and finally affects the alveolar nerve. The presence of the teeth has been considered as a relative barrier to cancer infiltration until now. Herein, we report an uncommon case of dental root invasion by adenoid cystic carcinoma of the floor of the mouth.
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28713733/effectiveness-of-preoperative-lymphoscintigraphy-for-the-detection-of-cervical-lymph-node-metastasis-in-patients-with-oral-squamous-cell-carcinoma
#13
Md Ahsan Habib, Quazi Billur Rahman, Shakhawat Hossain, Ashik Abdullah Imon, Gokul Chand Kundu
BACKGROUND: Oral squamous cell carcinoma (OSCC) is one of the most common malignant tumor. OSCC is the malignancy of squamous epithelium of oral cavity, which is the sixth most common malignancy reported worldwide and one with highest mortality rate among all malignancies. AIMS: The aims of this study is to assess the diagnostic performance of lymphoscintigraphy (LSG) for the detection of cervical lymph node metastasis in patients with OSCC. MATERIALS AND METHODS: This was a prospective study done in Oral and Maxillofacial Surgery Department and National Institute of Nuclear Medicine and Allied Science, Bangabandhu Sheikh Mujib Medical University during July 2015-June 2016...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28709529/margin-analysis-squamous-cell-carcinoma-of-the-oral-cavity
#14
REVIEW
Michael Shapiro, Andrew Salama
This article primarily focuses on defining terms including negative margin, close margin, and positive margin. Furthermore, this review delineates the current role of frozen section analysis and adjuvant therapy in treating oral squamous cell carcinoma with respect to surgical margin status.
August 2017: Oral and Maxillofacial Surgery Clinics of North America
https://www.readbyqxmd.com/read/28700327/endoplasmic-reticulum-aminopeptidase-2-involvement-in-metastasis-of-oral-cavity-squamous-cell-carcinoma-discovered-by-proteome-profiling-of-primary-cancer-cells
#15
I-Chun Kuo, Huang-Kai Kao, Yenlin Huang, Chun-I Wang, Jui-Shan Yi, Ying Liang, Chun-Ta Liao, Tzu-Chen Yen, Chih-Ching Wu, Kai-Ping Chang
Oral cavity squamous cell carcinoma (OSCC) is a leading cause of cancer-related deaths worldwide and associated with poor prognosis and mortality. Discovery of proteins that can improve OSCC treatment is needed. Using comparative proteome profiling of primary cells derived from OSCC and adjacent noncancerous epithelium, endoplasmic reticulum aminopeptidases 2 (ERAP2) has been identified as an OSCC-associated protein. Compared with the adjacent normal tissues, ERAP2 levels were determined to be significantly elevated in OSCC tissues using quantitative real-time PCR and immunohistochemistry...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28699108/the-role-of-epithelial-mesenchymal-transition-in-squamous-cell-carcinoma-of-the-oral-cavity
#16
Nina Zidar, Emanuela Boštjančič, Marija Malgaj, Nina Gale, Tadej Dovšak, Vojko Didanovič
Epithelial-mesenchymal transition (EMT) has emerged as a possible mechanism of cancer metastasizing, but strong evidence for EMT involvement in human cancer is lacking. Our aim was to compare oral spindle cell carcinoma (SpCC) as an example of EMT with oral conventional squamous cell carcinoma (SCC) with and without nodal metastases to test the hypothesis that EMT contributes to metastasizing in oral SCC. Thirty cases of oral SCC with and without nodal metastasis and 15 cases of SpCC were included. Epithelial (cytokeratin, E-cadherin), mesenchymal (vimentin, N-cadherin), and stem cell markers (ALDH-1, CD44, Nanog, Sox-2) and transcription repressors (Snail, Slug, Twist) were analyzed immunohistochemically...
July 12, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28694429/epidermal-growth-factor-receptor-intron-1-ca-repeat-polymorphism-on-protein-expression-and-clinical-outcome-in-taiwanese-oral-squamous-cell-carcinoma
#17
Shiang-Fu Huang, Huei-Tzu Chien, Wen-Yu Chuang, Chih-Hsiung Lai, Sou-De Cheng, Chun-Ta Liao, Hung-Ming Wang
This study was designed to explore the relationship between epidermal growth factor receptor (EGFR) CA repeats polymorphism and protein expression in oral cavity squamous cell carcinoma (OSCC). A total of 194 OSCCs were examined for EGFR protein overexpression, gene copy number and the length of their CA repeats. The length of the EGFR CA repeats was found not to be associated with EGFR gene copy number or with protein overexpression. To exclude the effect of EGFR gene copy number on protein overexpression, only those OSCC tumors with disomy of the EGFR gene were included in further analysis...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28689522/efficacy-and-toxicity-of-concurrent-chemoradiation-in-inoperable-oral-carcinoma-in-pakistani-population
#18
Abdul Rehman, Zafar Allaudin, Hasan Nisar, Irfan Ullah Khan, Ismat Fatima, Amira Shami, Misbah Masood, Abubaker Shahid
OBJECTIVE: To evaluate the efficacy of concurrent chemoradiation in patients with locally advanced inoperable squamous cell carcinoma of oral cavity in terms of local control and toxicity. STUDY DESIGN: Case series. PLACE AND DURATION OF STUDY: Institute of Nuclear Medicine and Oncology (INMOL), Lahore, from January 2008 to December 2013. METHODOLOGY: Sixty-nine patients with locally advanced inoperable oral cavity cancer, registered in INMOL hospital from January 2008 to December 2013 who fulfilled a pre-defined eligibility criteria, were enrolled in the study...
June 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28688861/fluorescence-based-characterization-of-early-oral-squamous-cell-carcinoma-using-the-visually-enhanced-light-scope-technique
#19
Egon Burian, Caterina Schulz, Florian Probst, Benjamin Palla, Matthias Tröltzsch, Fabio Maglitto, Luigi Califano, Michael Ehrenfeld, Sven Otto
OBJECTIVES: Several diagnostic tools have been developed to assess benign and potentially malignant disorders of soft tissues. In this study, we aimed to assess the value of the VELscope(®) (Visually Enhanced Light Scope) imaging device as a technical tool to investigate malignant lesions of the oral cavity. MATERIAL AND METHODS: In this retrospective study we analyzed the photographs of 90 patients who suffered from malignant oral soft tissue lesions or carcinoma in situ (CIS) from 2008 to 2014 in the Clinic of Oral and Maxillofacial Surgery of LMU in Munich...
June 3, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28688684/early-detection-of-squamous-cell-carcinoma-in-carcinogen-induced-oral-cancer-rodent-model-by-ratiometric-activatable-cell-penetrating-peptides
#20
Dina V Hingorani, Aaron J Lemieux, Joseph R Acevedo, Heather L Glasgow, Suraj Kedarisetty, Michael A Whitney, Alfredo A Molinolo, Roger Y Tsien, Quyen T Nguyen
OBJECTIVES: Ratiometric cell-penetrating-peptides (RACPP) are hairpin-shaped molecules that undergo cleavage by tumor-associated proteases resulting in measurable Cy5:Cy7 fluorescence ratiometric change to label cancer in vivo. We evaluated an MMP cleavable RACPP for use in the early detection of malignant lesions in a carcinogen-induced rodent tumor model. METHODS: Wild-type immune-competent mice were given 4-nitroquinoline-oxide (4NQO) for 16weeks. Oral cavities from live mice that had been intravenously administered MMP cleavable PLGC(Me)AG-RACPP were serially imaged from week 11 through week 21 using white-light reflectance and Cy5:Cy7 ratiometric fluorescence...
August 2017: Oral Oncology
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