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https://www.readbyqxmd.com/read/28435450/exome-sequencing-of-oral-squamous-cell-carcinoma-reveals-molecular-subgroups-and-novel-therapeutic-opportunities
#1
Shih-Chi Su, Chiao-Wen Lin, Yu-Fan Liu, Wen-Lang Fan, Mu-Kuan Chen, Chun-Ping Yu, Wei-En Yang, Chun-Wen Su, Chun-Yi Chuang, Wen-Hsiung Li, Wen-Hung Chung, Shun-Fa Yang
Oral squamous cell carcinoma (OSCC), an epithelial malignancy affecting a variety of subsites in the oral cavity, is prevalent in Asia. The survival rate of OSCC patients has not improved over the past decades due to its heterogeneous etiology, genetic aberrations, and treatment outcomes. Improvement in therapeutic strategies and tailored treatment options is an unmet need. To unveil the mutational spectrum, whole-exome sequencing of 120 OSCC from male individuals in Taiwan was conducted. Analyzing the contributions of the five mutational signatures extracted from the dataset of somatic variations identified four groups of tumors that were significantly associated with demographic and clinical features...
2017: Theranostics
https://www.readbyqxmd.com/read/28430715/computed-tomography-of-the-head-and-neck-region-for-tumor-staging-comparison-of-dual-source-dual-energy-and-low-kilovolt-single-energy-acquisitions
#2
Matthias Stefan May, Joscha Bruegel, Michael Brand, Marco Wiesmueller, Bernhard Krauss, Thomas Allmendinger, Michael Uder, Wolfgang Wuest
PURPOSE: The aim of this study was to intra-individually compare the image quality obtained by dual-source, dual-energy (DSDE) computed tomography (CT) examinations and different virtual monoenergetic reconstructions to a low single-energy (SE) scan. MATERIALS AND METHODS: Third-generation DSDE-CT was performed in 49 patients with histologically proven malignant disease of the head and neck region. Weighted average images (WAIs) and virtual monoenergetic images (VMIs) for low (40 and 60 keV) and high (120 and 190 keV) energies were reconstructed...
April 20, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28426848/differences-in-survival-with-surgery-and-postoperative-radiotherapy-compared-with-definitive-chemoradiotherapy-for-oral-cavity-cancer-a-national-cancer-database-analysis
#3
Michael T Spiotto, Gina Jefferson, Barry Wenig, Michael Markiewicz, Ralph R Weichselbaum, Matthew Koshy
Importance: Because locally advanced oral cavity squamous cell carcinoma (OCSCC) is often treated with surgery followed by postoperative radiotherapy (S+PORT), the effectiveness of organ preservation with concurrent chemoradiotherapy (CRT) remains unclear. Objective: To compare the differences in survival between patients with locally advanced OCSCC treated with S+PORT or CRT. Design, Setting, and Participants: Using the National Cancer Database, this study compared 6900 patients with stage III to IVA OCSCC treated with S+PORT and CRT from 2004 through 2012 at academic and community-based cancer clinics...
April 20, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28422732/molecular-and-serologic-markers-of-hpv-16-infection-are-associated-with-local-recurrence-in-patients-with-oral-cavity-squamous-cell-carcinoma
#4
Chung-Guei Huang, Li-Ang Lee, Chun-Ta Liao, Tzu-Chen Yen, Shu-Li Yang, Yi-Chun Liu, Jung-Chin Li, Yu-Nong Gong, Chung-Jan Kang, Shiang-Fu Huang, Ku-Hao Fang, Kai-Ping Chang, Li-Yu Lee, Chuen Hsueh, Shin-Ru Shih, Kuo-Chien Tsao
Human papillomavirus (HPV) infections predict mortality in Taiwanese patients with oral cavity squamous cell carcinoma (OCSCC). To address their prognostic significance for local recurrence (LR), in this retrospective cohort study we investigated different serologic and molecular markers of HPV 16 infection in 85 consecutive patients with primary OCSCC who received standard treatment and had their sera stored before treatment. Resected tumor specimens were examined with PCR-based assays for HPV 16 E6/E7 mRNA expression...
March 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28418447/association-of-oral-cavity-and-oropharyngeal-cancer-biomarkers-in-surgical-drain-fluid-with-patient-outcomes
#5
Amy Anne D Lassig, Anne M Joseph, Bruce R Lindgren, Bevan Yueh
Importance: Survival rates for head and neck cancer have been relatively stable for several decades. Individualized prognostic indicators are needed to identify patients at risk for poorer outcomes. Objective: To determine whether biomarker levels in surgical drain fluid of patients with head and neck cancer are associated with poor cancer outcomes. Design, Setting, and Participants: This prospective cohort study enrolled patients with squamous cell carcinoma (SCC) of the oral cavity and oropharynx who required surgical treatment from April 1, 2011, to February 1, 2016, at a tertiary or academic care center...
April 13, 2017: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28413676/expression-patterns-of-cd168-correlate-with-the-stage-and-grade-of-squamous-cell-carcinoma-of-head-and-neck
#6
Korinna Jöhrens, Ioannis Anagnostopoulos, Steffen Dommerich, Jan Dirk Raguse, Agnieszka J Szczepek, Frederick Klauschen, Katharina Stölzel
The receptor for hyaluronan-mediated motility CD168 is associated with the processes of oncogenesis and metastasis. The objective of the present study was to determine the possible association between the expression and distribution of CD168 and the tumor stage of head-and-neck squamous cell carcinoma (SCC). Formalin-fixed and paraffin-embedded tumor samples obtained from 100 patients during primary resection of SCC from the oral cavity, oropharynx, hypopharynx or larynx were included in the present study. The patients were divided into two risk groups: Low risk, representing the early stage of completely resected SCCs with good-to-moderate differentiation, and the high-risk group, representing the advanced stage SCCs with positive resection margins, vascular invasion or locoregional metastasis...
April 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28413598/solitary-peripheral-ivory-osteoma-of-the-mandible-presenting-with-difficulty-in-deglutition-a-case-report
#7
Kumar Nilesh, Aaditee V Vande, Suresh K Veerabhadrappa
Osteomas are benign bone tumors which arise from the cortex or medulla of craniofacial and jaw bones. They are usually asymptomatic or present as slow-growing painless masses. Larger lesions may present with aesthetic (facial asymmetry) and functional disturbances (jaw deviation, difficulty in breathing, pain, and sensory deficits). This paper highlights a case of solitary peripheral osteoma composed of a compact bony mass arising from the lower border of the mandible in an adult female patient. The lesion presented with discomfort during deglutition, which was attributed to impingement of muscles of the oral cavity floor, including the anterior belly of digastric muscle...
2017: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/28411387/prophylactic-dissection-of-level-v-in-primary-mucosal-scc-in-the-clinically-n-positive-neck-a-systematic-review
#8
REVIEW
Timothy McLean, Stephen J Kerr, Charles E B Giddings
OBJECTIVE: To review the evidence for level V dissection in the management of previously untreated mucosal squamous cell carcinoma (SCC) of the head and neck presenting with nodal metastasis when level V is clinically uninvolved. DATA SOURCE: The Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) were used to conduct a systematic review of the current literature, including all English language articles published after 1990. A literature search was performed on November 29, 2015, of Medline, EMBASE, Cumulative Index to Nursing and Allied Health Literature (CINAHL), and the Cochrane Library...
April 14, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28410949/-pigmentations-of-the-oral-cavity
#9
Jean-Christophe Fricain, Vincent Sibaud
Buccal mucosa color is explained by hemoglobin in the vessels and melanin in the epithelium. Abnormal presence of melanin pigments (hypermelaninosis, hypermelanocytosis), hematic pigments (hemoglobin, hemosiderin, iron) but also some exogenous circonstancies explain pigmented lesions (figure 1). These lesions could be localized (single lesions), multifocal (multiple lesions) or diffused. In case of a localized pigmentation with melanic appearance, melanoma must be systematically eliminated with a biopsy. In the case of a more diffused lesion, systemic disease must be evoked...
April 12, 2017: La Presse Médicale
https://www.readbyqxmd.com/read/28409372/primary-hyperparathyroidism-treated-by-transoral-endoscopic-parathyroidectomy-vestibular-approach-toepva
#10
Thanyawat Sasanakietkul, Tobias Carling
BACKGROUND: Bilateral open cervical exploration with identifying all parathyroid glands and removing one or more enlarged parathyroid tumor(s) was the standard of care in primary hyperparathyroidism (pHPT). With the introduction of preoperative imaging and intraoperative parathyroid hormone (IOPTH) measurements [1, 2], various minimally invasive parathyroidectomy approaches have been developed, both open and endoscopic [3-8]. The most commonly used approach currently in the USA is the minimally invasive open parathyroidectomy (MIP), which can be performed in the ambulatory setting with excellent cure and minimal complication rates [9-12]...
April 13, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28400320/classification-proposed-of-malignant-intraosseous-odontogenic-tumors-miot
#11
N Zwetyenga, E Broly, D Guillier, A Hallier, J Levasseur, V Moris
Malignant intraosseous odontogenic tumors (MIOT) of the jaws are very rare. The diagnosis is difficult. Clinical, paraclinical and histological diagnostic criteria, strict are well established. But the International Union Against Cancer (UICC) does not provide TNM classification that will allow harmonization of the treatment. Indeed, despite their location, they cannot be classified as primary tumors of the oral cavity because of their localization in the bone marrow, making them systematically classified as T4...
April 8, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28397269/asian-and-non-asian-disparities-in-outcomes-of-non-nasopharyngeal-head-and-neck-cancer
#12
Jason D Kim, Jennifer T Chang, Ali Moghaddamjou, Emily A Kornelsen, Jenny Y Ruan, Robert A Olson, Winson Y Cheung
OBJECTIVES/HYPOTHESIS: To evaluate disparities in overall survival (OS) between Asian and non-Asian patients diagnosed with non-nasopharyngeal head and neck cancer (HNC). STUDY DESIGN: This was a population-based, retrospective study of patients diagnosed with non-nasopharyngeal HNC of squamous cell carcinoma histology between 2001 and 2010 in British Columbia, Canada. METHODS: Using Kaplan-Meier methods and Cox regression models, we examined the relationship between race and OS...
April 11, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28396890/cowden-syndrome-%C3%A2-oral-presentations-of-a-paraneoplastic-syndrome-%C3%A2-case-report-and-review-of-the-literature
#13
Snober Tariq, Joseph Katz
Cowden syndrome is an autosomal dominant disorder with a predisposition to multiple benign and malignant tumors with unique oral manifestations. We present a case of Cowden syndrome in a patient diagnosed with breast cancer, traumatic fibromas, bronchial asthma, and multiple papillomatous fibromatosis of the oral cavity. Close association between oral papillomatosis associated with Cowden syndrome and PTEN gene mutation may increase the risk for malignant transformation. Therefore, patients of Cowden syndrome should be monitored carefully for all kinds of cancers...
2017: Quintessence International
https://www.readbyqxmd.com/read/28390191/molecular-imaging-and-oral-cancer-diagnosis-and-therapy
#14
Maryam Keshavarzi, Mansoreh Darijani, Fatemeh Momeni, Pouya Moradi, Hamed Ebrahimnejad, Aria Masoudifar, Hamed Mirzaei
Oral cancer is known as one of relatively common type of cancer worldwide. Despite the easy access of the oral cavity to examination, oral tumors are diagnosed in more advanced stages of the disease. Imaging techniques have been recently emerged as non-invasive approaches to detect molecular and cellular changes in living cells and organisms. These techniques such as computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET) could help physicians to screen patients with oral tumors particularly oral squamous cell carcinoma (OSCC) in early stage of the disease...
April 8, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28388583/oral-cancer-cells-sustainedly-infected-with-porphyromonas-gingivalis-exhibit-resistance-to-taxol-and-have-higher-metastatic-potential
#15
Bok Hee Woo, Da Jeong Kim, Jeom Il Choi, Sung Jo Kim, Bong Soo Park, Jae Min Song, Ji Hye Lee, Hae Ryoun Park
Major obstacles to improving the prognosis of patients with oral squamous cell carcinoma (OSCC) are the acquisition of resistance to chemotherapeutic agents and development of metastases. Recently, inflammatory signals are suggested to be one of the most important factors in modulating chemoresistance and establishing metastatic lesions. In addition, epidemiological studies have demonstrated that periodontitis, the most common chronic inflammatory condition of the oral cavity, is closely associated with oral cancer...
March 24, 2017: Oncotarget
https://www.readbyqxmd.com/read/28381149/two-unusual-cases-of-oral-lichen-planus-arising-after-oral-squamous-cell-carcinoma
#16
Davide Bartolomeo Gissi, Sofia Asioli, Andrea Gabusi
Autoimmune diseases occur when the immune system fails to recognize self-antigens expressed on the body's own cells and attacks them. Oral lichen planus (OLP) is a chronic autoimmune mucocutaneous disease of the oral cavity characterized by white/red lesions. Considered a potentially malignant disorder, OLP evolution into oral squamous cell carcinoma (OSCC) is still a matter of debate. While chronic autoimmune inflammation is considered a potential risk factor for malignant transformation in many solid tumors, the opposite idea that cancer may trigger autoimmune responses remains controversial...
March 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28377665/peripheral-odontogenic-fibroma-a-rare-tumor-mimicking-a-gingival-reactive-lesion
#17
Komal Khot, Swati Deshmane, Kriti Bagri-Manjrekar, Paresh Khot
Gingival growths are one of the most frequently encountered lesions in the oral cavity. A plethora of lesions can be seen having similar clinical presentation, making diagnosis a dilemma. Peripheral odontogenic tumors are rare neoplasms to occur on gingiva, the most common among them being the peripheral odontogenic fibroma (POdF). The POdF is a benign, slow-growing, exophytic lesion. Although considered to have a recurrence potential after excision, the actual recurrence rate is not known due to paucity of reported cases...
January 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28377663/pediatric-palatal-fibroma
#18
Rahul Mishra, Tayyeb S Khan, Tarannum Ajaz, Mamta Agarwal
Fibroma is one of the most common soft tissue benign tumors of the oral cavity. These masses represent hyperplasias instead of true neoplasm, which develop due to irritation to the mucosal tissue resulting in proliferation of the cells. Although so common in the oral cavity, its occurrence on the palate is rare, mainly due to fewer chances of trauma. Here, we report a case of palatal fibroma in a child diagnosed on the basis of clinical, radiological, and histological features. The case represents an extremely rare occurrence as unusual trauma due to thumb sucking seemed to be the only apparent traumatic factor in the palatal region...
January 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28370753/endocavitary-sonography-of-early-oral-cavity-malignant-tumors
#19
Giuseppe Angelelli, Marco Moschetta, Luisa Limongelli, Annamaria Albergo, Emanuela Lacalendola, Francesco Brindicci, Gianfranco Favia, Eugenio Maiorano
BACKGROUND: Preoperative staging is crucial for oral cancer management. The purpose of this study was to assess the tumor thickness using ultrasound and to correlate the level of histological infiltration with the tumor superficial extension and lesion thickness. METHODS: Thirty-two subjects affected by oral cavity carcinoma were prospectively evaluated with intraoral ultrasound. The ultrasound sensitivity, the correlation between the ultrasound level of infiltration, and lesion diameters and thickness were assessed...
March 29, 2017: Head & Neck
https://www.readbyqxmd.com/read/28366574/patterns-of-care-in-adjuvant-therapy-for-resected-oral-cavity-squamous-cell-cancer-in-elderly-patients
#20
Erqi L Pollom, Alexander L Chin, Nancy Y Lee, C Jillian Tsai
PURPOSE: To characterize the patterns of care and potential barriers to access to care for elderly patients with oral cavity cancer in the adjuvant setting. METHODS AND MATERIALS: We performed a retrospective cohort study using the National Cancer Data Base and identified patients with resected oral cavity squamous cell carcinoma diagnosed between 2004 and 2012, who survived for ≥3 months after surgery. We used logistic regression models to assess the association between age (<70, 70-79, and ≥80 years) and the receipt of adjuvant therapy within 3 months of surgery...
February 2, 2017: International Journal of Radiation Oncology, Biology, Physics
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