keyword
MENU ▼
Read by QxMD icon Read
search

Odontogenic tumor

keyword
https://www.readbyqxmd.com/read/28545325/mandibular-odontoameloblastoma-in-a-rat-and-a-horse
#1
Brian Murphy, Cynthia Bell, Amanda Koehne, Richard R Dubielzig
Odontoameloblastoma (OA) is a mixed odontogenic tumor that is an ameloblastoma with concurrent histologic evidence of odontoma differentiation. As a mixed tumor, OA is a tripartite lesion comprised of neoplastic odontogenic epithelium, induced dental ectomesenchyme (dental pulp), and mineralized dental matrix. Although rare, OA represents a diagnostic conundrum, as it is histologically closely related to 2 other mixed odontogenic tumors: odontoma (complex and compound) and ameloblastic fibro-odontoma. Herein we describe an OA arising from the mandible of a 4-mo-old Fischer 344 rat that had been exposed in utero to the mutagen ENU (N-ethyl-N-nitrosourea), and a naturally occurring lesion in a 2-y-old Appaloosa horse...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28543986/a-case-of-primordial-odontogenic-tumor-a-new-entity-in-the-latest-who-classification-2017
#2
Toshinori Ando, Madhu Shrestha, Takashi Nakamoto, Kaori Uchisako, Sachiko Yamasaki, Koichi Koizumi, Ikuko Ogawa, Mutsumi Miyauchi, Takashi Takata
Primordial odontogenic tumor (POT) is a rare lesion in the jaw which has been included as a new entity of benign mixed epithelial and mesenchymal odontogenic tumour in the latest World Health Organization (WHO) classification (2017). Only seven cases have been reported. It typically occurs in the posterior mandible. We report an additional case of POT in the maxilla of an 8-year-old girl presenting with an asymptomatic buccal enlargement. A well-defined, unilocular, radiolucent lesion was observed radiographically...
May 25, 2017: Pathology International
https://www.readbyqxmd.com/read/28521454/histopathological-and-immunohistochemical-study-in-keratocystic-odontogenic-tumors-predictive-factors-of-recurrence
#3
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/28512636/expression-of-yap-taz-in-keratocystic-odontogenic-tumors-and-its-possible-association-with-proliferative-behavior
#4
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/28510282/cytologic-features-of-a-feline-inductive-odontogenic-tumor
#5
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
#6
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
#7
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
#8
U Ordioni, G Benat, M Hadj Saïd, A Gomez-Brouchet, C Chossegros, J-H 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-year-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/28499501/potential-involvement-of-chondroitin-sulfate-a-in-the-pathogenesis-of-ameloblastoma
#9
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/28494609/odontomas-in-developmental-age-confocal-laser-scanning-microscopy-analysis-of-a-case
#10
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
#11
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/28489118/analysis-of-glut-1-glut-3-and-angiogenic-index-in-syndromic-and-non-syndromic-keratocystic-odontogenic-tumors
#12
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/28479716/primary-intraosseous-odontogenic-squamous-cell-carcinoma-of-the-mandible
#13
Paolo Cariati, Ana Belén Marin Fernandez, Miguel Perez de Perceval Tara, Jose Fernandez Solis, Ildefonso Martinez Lara
Primary intraosseous odontogenic squamous cell carcinoma (PIOSCC) is a rare tumor. The incidence is low, and approximately 200 cases are reported in literature. The etiology is associated with the malignant degeneration of embryological remains. Differential diagnosis includes alveolar carcinomas, jaw metastases from other locations, odontogenic tumors, and tumors of the maxillary sinus. However, the diagnosis could be delayed due to the absence of symptoms in early stages. Surgery represents the first choice treatment...
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28479710/squamous-cell-carcinoma-arising-from-keratocystic-odontogenic-tumor
#14
Supriya Kheur, G S Mamatha, Neeta Bagul, Kapil Kshirsagar
No abstract text is available yet for this article.
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28479706/disorganized-histomorphology-dentinogenic-ghost-cell-tumor
#15
Cheshta Walia, Bina Kashyap, Sudip Roy
Calcifying odontogenic cyst (COC) is a term used broadly to define lesions which were either cystic/solid in nature. However, a new term defining dentinogenic ghost cell tumor (DGCT), as its neoplastic counterpart, histopathologically showed the presence of dentinoid-like areas, ghost cells and ameloblastomatous-like odontogenic epithelium. This possesses a great challenge to an oral pathologist in diagnosing and differentiating it from solid multicystic ameloblastoma or COCs so as to ensure the biological behavior and pathogenesis behind its multifaceted nature...
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28479705/concurrent-central-odontogenic-fibroma-and-dentigerous-cyst-in-the-maxilla-a-rare-case-report
#16
Sanjay Murgod, H C Girish, J K Savita, V K Varsha
Central odontogenic fibroma (COF) represents a rare group of benign odontogenic tumor, while dentigerous cyst (DC), on the other hand, is the odontogenic cyst that encloses the crown of an unerupted tooth. A combination of COF and DC is rare and not reported in literature till date. The aim of this paper is to report a case of COF occurring concurrently with DC. The simultaneous occurrence of COF and DC raises the question of whether it is a collision tumor or their simultaneous occurrence is just a coincidence...
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28479687/comparative-immunohistochemical-study-of-bcl-x-in-ameloblastoma-keratocystic-odontogenic-tumor-and-adenomatoid-odontogenic-tumor
#17
Payal Shukla, Sudeendra Prabhu, Maji Jose, B H Sripathi Rao
OBJECTIVES: Since its recognition as a physiologic process associated with tumor, among molecular mechanisms involved in tumor progression, defects in regulation of apoptosis have generated an accelerating volume of research that has sought to elucidate the role of programed cell death in pathogenesis and treatment of various tumors. Therefore, this study was performed to understand better the diverse biological profile of epithelial odontogenic tumors with the help of immunohistochemical expression of Bcl-X protein...
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28479677/odontogenic-tumor-indian-scenario
#18
EDITORIAL
B Sivapathamsundaram
No abstract text is available yet for this article.
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28472562/prevalence-of-odontogenic-lesions-among-the-kanpur-population-an-institutional-study
#19
Amrita Raj, Gayathri Ramesh, Ramesh Nagarajappa, Amit Pandey, Ankita Raj
BACKGROUND: The frequency and incidence of odontogenic cysts and tumors are controversial and depends in the geographic location. These lesions have great clinical and histopathological diversity, and reflect a need for epidemiological profile to be considered when these lesions are studied. AIM: The purpose of this study was to determine the prevalence of odontogenic cysts and tumors over a period of 10 years and to compare with other data reported around the world...
May 2017: Journal of Experimental Therapeutics & Oncology
https://www.readbyqxmd.com/read/28471735/clinical-finding-and-management-of-12-orofacial-clefts-cases-with-nevoid-basal-cell-carcinoma-syndrome
#20
Lee Mui Lee, Lian Ma, Tie Jun Li
Objective  To study the phenotype and overview the clinical management on Cleft Lip and/or Palate (CL/P) with Nevoid Basal Cell Carcinoma Syndrome (NBCCS) patients in Peking University School and Hospital of Stomatology. Design  Case series study. Main Outcome Measures  To describe the clinical phenotype of 12 CL/P with NBCCS patients who fulfilled the diagnostic criteria as well as to explore clinical management. Results  Seven cases (7/12, 58.33%) were classified as bilateral complete cleft lip and palate (BCCLP)...
May 2017: Cleft Palate-craniofacial Journal
keyword
keyword
24756
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"