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https://www.readbyqxmd.com/read/28527295/periostitis-ossificans-arising-in-the-mandibular-bone-of-young-patient-report-of-an-unusual-case-and-review-of-the-literature
#1
Masakatsu Fukuda, Katsuyuki Inoue, Hideaki Sakashita
Periostitis ossificans, also known as Garré osteomyelitis, is a specific type of chronic osteomyelitis that forms new bone under the periosteum resulting from a periosteal reaction to chronic inflammation or infections. It commonly affects the mandible secondary to odontogenic infection. The therapeutic approach involves eliminating the infectious cause and antibiotic administration. This report describes an unusual case of periostitis ossificans arising from the mandible of an 11-year-old boy. The cause of infection was correlated with a lower right unerupted third molar, which had no obvious connection with the oral cavity...
April 26, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28521454/histopathological-and-immunohistochemical-study-in-keratocystic-odontogenic-tumors-predictive-factors-of-recurrence
#2
Tomofumi Naruse, Kentaro Yamashita, Souichi Yanamoto, Satoshi Rokutanda, Yuki Matsushita, Yuki Sakamoto, Hiroshi Sakamoto, Hisazumi Ikeda, Tohru Ikeda, Izumi Asahina, Masahiro Umeda
The aim of the present study was to identify the most useful markers for predicting recurrence of keratocystic odontogenic tumors (KCOTs). A total of 65 tumor samples from 63 patients diagnosed with typical parakeratinized cysts and KCOTs between 1992 and 2014 were retrospectively studied. Clinical and histopathological data and treatment modality were reviewed. In addition, the expression profiles of Ki-67, cluster of differentiation (CD)34 and podoplanin were assessed using immunohistochemistry. The association between these factors and the rate of KCOT recurrence was evaluated...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28514364/-radiodiagnostics-of-odontogenic-maxillary-sinusitis
#3
N S Serova, E V Evseeva
The objective of the present study was to analyze the potential of such techniques as X-ray, multi-slice computed tomography (MSCT), and cone-beam computed tomography (CBCT) for diagnostics of odontogenic maxillary sinusitis. The secondary objective was to describe changes in maxillary sinuses identifiable with the help of the above methods. The study included 166 patients at the age varying from 21 to 81 years presenting with odontogenic maxillary sinusitis. All of them underwent the roentgenological examination...
2017: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/28513313/odontogenic-fibromyxoma-in-a-cat-first-confirmed-case-in-this-species
#4
Kristin I Scott, Colin E Harvey, James G Anthony, Roy Pool
An inflammatory gingival mass surrounding resorbing teeth was diagnosed via biopsy in a 9-year-old domestic shorthair cat. A dorsal rim excision was performed to remove the entire mass with associated teeth and bone. Histopathological diagnosis of the en bloc tissue revealed an odontogenic fibromyxoma. Extensive literature review revealed few case reports of companion animals with this neoplasm, and none in a feline patient. This report documents the clinical presentation, diagnostic differentials, surgical therapy, and long-term follow-up of an odontogenic fibromyxoma in a cat...
March 2017: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/28512636/expression-of-yap-taz-in-keratocystic-odontogenic-tumors-and-its-possible-association-with-proliferative-behavior
#5
Qi-Wen Man, Yan-Qi Ma, Jin-Yuan Liu, Yi Zhao, Bing Liu, Yi-Fang Zhao
The aim of this study is to clarify whether YAP/TAZ is involved in the pathogenesis and proliferative growth of keratocystic odontogenic tumor (KCOT). The expression levels of YAP/TAZ and downstream proteins and genes in normal oral mucosa (OM) and KCOT were determined and compared by immunohistochemistry and real-time quantitative PCR. The results showed that the expression of YAP/TAZ and downstream proteins (Cyr61, CTGF) was significantly upregulated in KCOT with upregulation of Ki-67 compared to OM. Importantly, the mRNA levels of transcription factors (TEAD1, TEAD4, and RUNX2) and cell cycle related genes (CDK2, PCNA), which interact with the transcriptional coactivators YAP/TAZ, are also upregulated in the KCOT...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28512274/glucose-transporter-1-expression-in-odontogenic-keratocyst-dentigerous-cyst-and-ameloblastoma-an-immunohistochemical-study
#6
Alokenath Bandyopadhyay, Abikshyeet Panda, Shyam S Behura, Sujatha Ramachandra, Kailash C Dash, Pallavi Mishra
INTRODUCTION: An array of odontogenic lesions manifest in the maxillofacial region with variable presentations. The biological behavior of lesions, such as odontogenic keratocyst (OKC), dentigerous cyst (DC), and ameloblastoma (AM) always invite debate. Glucose transporter 1 (GLUT-1) is proven to be an indicator of metabolic behavior of several benign and malignant neoplasms. AIM: The purpose of this study was to evaluate the expression of GLUT-1 in OKC, DC, and AM to understand their metabolic behavior...
May 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28510282/cytologic-features-of-a-feline-inductive-odontogenic-tumor
#7
Ronaldo V Leite-Filho, Nelson J Tagliari, Fabrizio Grandi, Cláudio J M Laisse, Daniel G Gerardi, Saulo P Pavarini
The feline inductive odontogenic tumor (FIOT) is a rare entity among oral tumors in cats, the cytologic features of which are not well characterized but may prove useful. A fine-needle aspiration biopsy was performed on the right mandible between the canine (804) and second premolar (806) of an 8-month-old female mongrel cat. Cytologic smears showed epithelial cells and occasional spindle cells with extracellular homogenous acidophilic material in a hematic background. The initial diagnosis of benign tumor was confirmed by histopathologic examination of the biopsy specimen...
May 16, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28508997/fibromyxoma-of-the-jaw-case-report-and-review-of-the-literature
#8
Thabet Alhousami, Amarpreet Sabharwal, Shivane Gupta, Alfredo Aguirre, Etern Park, Jill M Kramer
We report a case of fibromyxoma of the mandible, a rare benign odontogenic tumor. Our patient presented in the first trimester of pregnancy with a large mass in the right body of the mandible exhibiting displacement of teeth and destruction of an extensive area of the mandibular bone. The mass was biopsied and diagnosed as a fibromyxoma. The large size of the tumor dictated a wide mandibular resection. We will review the clinical, radiographic, and histologic features of fibromyxoma and discuss its differential diagnoses...
May 16, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28503263/spontaneous-peripheral-ameloblastic-odontoma-in-a-male-sprague-dawley-rat
#9
Yinghua Li, Han-Ik Bae, Hak-Soo Kim, Min-Soo Kang, Bo-Ho Gong, Won-Hee Jung, Sranna Lee, Jin-Sook Bae, Kap-Ho Kim, Si-Whan Song, Jae-Hyun Lee, Boo-Hyon Kang
Peripheral ameloblastic odontoma is a rare variant of odontogenic tumor occurring in the extraosseous region. The present report describes a spontaneous tumor in male Sprague-Dawley (SD) rats. The clinically confirmed nodule in the right mandibular region was first observed when the rat was 42 weeks and remained until the terminal sacrifice date when the animal was 48 weeks of age. At necropsy, a well demarcated nodule, approximately 2.5 × 2.0 × 2.0 cm, protruded from the ventral area of the right mandible...
April 2017: Toxicological Research
https://www.readbyqxmd.com/read/28502762/clear-cell-odontogenic-carcinoma-diagnostic-difficulties-a-case-report
#10
Ugo Ordioni, Gauhier Benat, Mehdi Hadj Saïd, Anne Gomez-Brouchet, Cyrille Chossegros, Jean-Hugues Catherine
INTRODUCTION: Clear cell odontogenic carcinoma (COCC) is a rare tumor described by Hansen et al. in 1985. The clinical and radiological manifestations are multiple and the diagnosis is histological. OBSERVATION: A 64 years old patient consulted us for a right mandibular osteolytic lesion associated to a homolateral labial hypoesthesia. A biopsy was performed under local anesthesia. Histology was consistent with a metastatic lesion of clear kidney cell carcinoma, COCC, or odontogenic squamous tumor...
May 11, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28501097/orofacial-pain-and-headaches-associated-with-exfoliation-glaucoma
#11
Noboru Noma, Mayumi Iwasa, Andrew Young, Mariko Ikeda, Yung-Chu Hsu, Maasa Yamamoto, Kenji Inoue, Yoshiki Imamura
BACKGROUND AND OVERVIEW: Exfoliation syndrome is the most common identifiable cause of open-angle glaucoma. The authors report a case of exfoliation glaucoma in a patient who had orofacial pain. CASE DESCRIPTION: A 77-year-old woman was treated at the orofacial pain clinic for left-sided facial pain and headaches of 7 months' duration. Her cataracts and open-angle glaucoma had been diagnosed approximately 3 years earlier. Her main symptoms were orofacial pain, eye redness, inflammation of the eyelids, and eyelid edema...
May 11, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28499501/potential-involvement-of-chondroitin-sulfate-a-in-the-pathogenesis-of-ameloblastoma
#12
Xiangjun Li, Hiroshi Kurita, Tiepeng Xiao, Kyou Iijima, Kenji Kurashina, Jun Nakayama
Ameloblastoma is classified as a benign odontogenic tumor characterized by locally invasive behavior and high risk of recurrence. Here, we evaluate a potential role for glycosaminoglycan, a structural component of cell membranes and extracellular matrix, in ameloblstoma pathogenesis. We subjected formalin-fixed, paraffin-embedded tissue sections of 34 cases of ameloblastoma, 10 of odontogenic keratocyst, and 17 of dentigerous cyst to immunohistochemistry using monoclonal antibodies recognizing chondroitin sulfate A (CS-A), heparan sulfate (HS), and keratan sulfate (KS)...
May 9, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28497678/eosinophil-fungal-rhinosinusitis-caused-by-fusarium-infection-secondary-to-odontogenic-maxillary-sinus-disease-when-collaboration-between-otolaryngologist-and-allergologist-leads-to-the-correct-diagnosis-and-therapy
#13
P Gamba, C Lombardi
Rhinitis and sinusitis usually coexist and are concurrent in most individuals; thus, the correct terminology is now "rhinosinusitis". On the basis of numerous causative factors, often co-existing in the same patient, the diagnosis of rhinosinusitis is also made by a wide variety of practitioners (allergologists, otolaryngologists, pulmonologists, primary care physicians, paediatricians, and many others). Approximately 5-15% of the population suffers from chronic rhinosinusitis, and in 10-12% of them, it is of dental origin...
May 2017: European Annals of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28494609/odontomas-in-developmental-age-confocal-laser-scanning-microscopy-analysis-of-a-case
#14
M Lacarbonara, V Lacarbonara, A P Cazzolla, V Spinelli, V Crincoli, M G Lacaita, M Capogreco
BACKGROUND: Odontomas are the most common benign odontogenic tumors (especially in children and adolescents) and consist of odontogenic ectomesenchyma and odontogenic epithelium with the formation of dental hard tissues. They are also simply considered hamartomas. The WHO Classification defines them as complex and compound odontomas. The diagnosis is often occasional, in conjunction with x-ray routine examinations, or it is suggested by eruption disorders or abnormal position of teeth in the dental arch...
March 2017: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/28492759/ameloblastic-fibrosarcoma-a-case-report-and-literature-review
#15
João Paulo Silva Servato, Paulo Rogério de Faria, Cássio Vinhadelli Ribeiro, Sergio Vitorino Cardoso, Paulo Rogério de Faria, Fernando Luiz Dias, Ana Lúcia Amaral Eisenberg, Adriano Mota Loyola
Here is described a case of ameloblastic fibrosarcoma (AFS) affecting the posterior mandible of a woman who was treated surgically and recovered without signs of recurrence or metastasis after 12 years of follow-up. Tumor sections were immunostained for cell cycle, epithelial and mesenchymal markers. Immunohistochemical analysis evidenced high Ki-67 positivity in stromal cells (mean of 20.9 cells/High power field). Epithelial cells displayed strong positivity for p53, p63 and cytokeratin 19. In addition to the case report, a systematic review of current knowledge is presented on the AFS's clinical-demographic features and prognostic factors...
March 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28489485/igf-1-mediates-ephrinb1-activation-in-regulating-tertiary-dentin-formation
#16
S Matsumura, A Quispe-Salcedo, C M Schiller, J S Shin, B M Locke, S Yakar, E Shimizu
Eph receptors belong to a subfamily of receptor tyrosine kinases that are activated by membrane-spanning ligands called ephrins. Previously, we demonstrated that the ephrinB1-EphB2 interaction regulates odontogenic/osteogenic differentiation from dental pulp cells (DPCs) in vitro. The goal of this study was to identify the molecular mechanisms regulated by the EphB2/ephrinB1 system that govern tertiary dentin formation in vitro and in vivo. During tooth development, ephrinB1, and EphB2 were expressed in preodontoblast and odontoblasts at postnatal day 4...
May 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28489259/molecular-alterations-in-odontogenic-keratocysts-as-potential-therapeutic-targets
#17
REVIEW
Carolina Cavalieri Gomes, Letícia Martins Guimarães, Marina Gonçalves Diniz, Ricardo Santiago Gomez
The odontogenic keratocyst (OKC) is a cystic lesion, lined by uniformly-thickened parakeratinized epithelium. Some lesions are large and tend to recur after surgical treatment. The neoplastic nature of OKCs remains a matter of dispute. It is known that some sporadic OKCs harbor PTCH1 mutations, and via the dissection of cyst epithelium, these mutations were demonstrated to occur much more frequently than previously thought. In addition to the classical PTCH1 mutations, Hedgehog pathway disturbance and Bcl-2 protein overexpression, as detected via genome-wide expression analysis of OKCs, have been published...
May 10, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28489242/large-pediatric-maxillary-dentigerous-cysts-presenting-with-sinonasal-and-orbital-symptoms-a-case-series
#18
Shakil Ahmed Nagori, Anson Jose, Ongkila Bhutia, Ajoy Roychoudhury
Dentigerous cysts are benign odontogenic cysts associated with the crowns of unerupted, embedded, or impacted teeth. Most of them are associated with mandibular third molars, followed by maxillary third molars and canines. They are usually asymptomatic, and rarely do they grow extensively and compress the adjacent anatomic structures. We report 5 cases of extensive maxillary dentigerous cysts presenting with sinonasal and orbital symptoms. A literature review for similar presentations of dentigerous cysts has demonstrated 21 cases...
April 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28489118/analysis-of-glut-1-glut-3-and-angiogenic-index-in-syndromic-and-non-syndromic-keratocystic-odontogenic-tumors
#19
Rafaella Bastos Leite, Roberta Barroso Cavalcante, Renato Luiz Maia Nogueira, Lélia Batista de Souza, Leão Pereira Pinto, Cassiano Francisco Weege Nonaka
The aim of this study was to evaluate the immunoexpression of glucose transporters 1 (GLUT-1) and 3 (GLUT-3) in keratocystic odontogenic tumors associated with Gorlin syndrome (SKOTs) and non-syndromic keratocystic odontogenic tumors (NSKOTs), and to establish correlations with the angiogenic index. Seventeen primary NSKOTs, seven recurrent NSKOTs, and 17 SKOTs were selected for the study. The percentage of immunopositive cells for GLUT-1 and GLUT-3 in the epithelial component of the tumors was assessed. The angiogenic index was determined by microvessel count...
April 27, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28485021/pattern-of-distribution-of-odontogenic-tumours-in-sub-saharan-africa
#20
Oladunni M Ogundana, Olajumoke Ajibola Effiom, Onatolu Odukoya
OBJECTIVE: To analyse documented reports on odontogenic tumours (OTs) in sub-Saharan Black Africa and to create awareness of the need for more reports on this topic. METHODS: There were 2,186 African cases of OTs presented at the International Association of Oral and Maxillofacial Pathologists (IAOP) Congress (Cape Town, South Africa) in 1998 that were added to 2,198 cases derived from reports published in the scientific literature from 1998 to date. The analysis undertaken included frequency distribution of available data on OTs that was listed in the 2005 World Health Organization (WHO) classification...
May 8, 2017: International Dental Journal
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