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Odontogenic cyst

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https://www.readbyqxmd.com/read/28302235/glandular-odontogenic-cyst
#1
Betina Chandolia, Manas Bajpai, Manika Arora
The glandular odontogenic cyst (GOC), though rare, has now become a well known entity. The frequency of GOC ranges from 0.012% to 1.3% of all jaw cysts and its worldwide prevalence is 0.17%. The GOC's microscopic features have been well documented, and are also included in the list of World Health Organization. We report a case of GOC presenting as a unilocular osteodestructive lesion of anterior mandible in a 28-year female. The diagnosis was made on the basis of characteristic histological findings.
March 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28292369/premolar-cystic-ameloblastoma-in-a-child
#2
Sanyog Pathak, Wanjari Ghate Sonalika, Vanishree Hs, Anand S Tegginammani
Mandibular swellings may occur as a result of many benign lesions of odontogenic or non-odontogenic origin. Ameloblastomas are benign tumours of odontogenic origin, whose importance lies in its potential to grow into enormous size with resulting bone deformity, it is a slow-growing, persistent, and locally aggressive neoplasm. The unicystic ameloblastoma (UA) represents an ameloblastoma variant, presenting as a cyst clinically and radiographically, but showing typical ameloblastomatous epithelium lining histologically...
January 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28280759/immunohistochemical-comparison-of-the-expression-of-cd34-and-cd105-in-odontogenic-keratocyst-and-dentigerous-cyst
#3
Shokoofeh Jamshidi, Massoumeh Zargaran, Ghodratollah Roshanaei, Fatemeh Hadadi, Ali Dehghani Nazhvani
STATEMENT OF THE PROBLEM: Odontogenic keratocyst (OKC) is a developmental odontogenic cyst with specific histopathological features, high recurrence rate, and aggressive clinical behavior. Angiogenesis might be considered as an important factor for the growth, expansion, and distribution of this lesion. PURPOSE: The aim of the present study was to determine the mean vascular densities (MVD) of OKCs and dentigerous cysts to evaluate their relationship with the biologic behavior of these lesions...
March 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28247226/update-from-the-4th-edition-of-the-world-health-organization-classification-of-head-and-neck-tumours-odontogenic-and-maxillofacial-bone-tumors
#4
John M Wright, Marilena Vered
The 4th edition of the World Health Organization's Classification of Head and Neck Tumours was published in January of 2017. This article provides a summary of the changes to Chapter 4 Tumours of the oral cavity and mobile tongue and Chapter 8 Odontogenic and maxillofacial bone tumours. Odontogenic cysts which were eliminated from the 3rd 2005 edition were included in the 4th edition as well as other unique allied conditons of the jaws. Many new tumors published since 2005 have been included in the 2017 classification...
March 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28238093/role-of-hif-1%C3%AE-and-caspase-3-in-cystogenesis-of-odontogenic-cysts-and-tumors
#5
Natacha M M da Costa, Adriane S de Siqueira, André L R Ribeiro, Maria S da Silva Kataoka, Ruy G Jaeger, Sérgio M de Alves-Júnior, Andrew M Smith, João de Jesus Viana Pinheiro
OBJECTIVES: Odontogenic cysts and tumors are the most relevant lesions that affect the gnathic bones. These lesions have in common the formation of cystic areas and this common feature may suggest involvement of similar mechanisms. The hypoxia inducible factor 1 alpha (HIF-1α), a responsive protein to hypoxia and caspase-3, an irreversible apoptosis marker, may contribute to cyst formation. Thus, this study aimed to investigate the immunoexpression of these proteins in odontogenic cysts and tumors...
February 25, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28209010/removal-of-infected-maxillary-third-molar-from-the-infra-temporal-fossa-by-caldwell-luc-procedure-rare-case-report-with-literature-review
#6
Anand Kumar, Ram Kumar Srivastava, Anurag Saxena, Ruchika Khanna, Iqbal Ali
Dentigerous or follicular cysts of odontogenic origin are innocuous benign cysts that are often linked with the crowns of permanent teeth. A dentigerous cyst circumventing permanent teeth fails to erupt and is often displaced into ectopic positions in the upper and lower jaw in the maxillofacial region. In the maxilla or upper jaw region, the impacted teeth are often displaced and/or shift into the maxillary sinus and apart from the nasal septum, mandibular condyle, coronoid process and the palate, to harbour such ectopic eruptions of teeth...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28209002/ability-of-oral-and-maxillofacial-surgery-residents-in-diagnosing-jaw-cysts-a-retrospective-20-years-study
#7
Hassan Mohajerani, Mohammad Esmaeelinejad, Reza Mofidian
INTRODUCTION: Diagnosis of odontogenic cysts despite of their benign nature is a critical and challenging problem especially among undergraduate and postgraduate students. AIM: This study aimed to evaluate the capability of oral and maxillofacial surgery residents in diagnosing odontogenic cysts. MATERIALS AND METHODS: This cross-sectional study was executed on 312 patient records over the past 20 years since October 1995 till December 2014 in Taleghani Hospital, Tehran, Iran...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28188092/-isolation-of-pseudomonas-stutzeri-from-an-odontogenic-inflammatory-cyst-diagnostic-relevance
#8
Susana Molgatini, Eduardo Rey, Jorge Basilaki, Christian Mosca, Rafael Galante, Laura Gliosca
Pseudomonas stutzeri is distributed widely in the environment, and occupies different ecological niches. However, it is found in clinically relevant infections as an opportunistic pathogen. Isolation of P. stutzeri from an odontogenic inflammatory cyst is an uncommon microbiological finding that has not been reported to date. In the case presented here, the bacterium was isolated from surgical material obtained from excision of an inflammatory odontogenic cyst located in the tooth 1.2, and presenting with concomitant pulp necrosis...
February 7, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/28187891/automated-classification-of-maxillofacial-cysts-in-cone-beam-ct-images-using-contourlet-transformation-and-spherical-harmonics
#9
Fatemeh Abdolali, Reza Aghaeizadeh Zoroofi, Yoshito Otake, Yoshinobu Sato
BACKGROUND AND OBJECTIVE: Accurate detection of maxillofacial cysts is an essential step for diagnosis, monitoring and planning therapeutic intervention. Cysts can be of various sizes and shapes and existing detection methods lead to poor results. Customizing automatic detection systems to gain sufficient accuracy in clinical practice is highly challenging. For this purpose, integrating the engineering knowledge in efficient feature extraction is essential. METHODS: This paper presents a novel framework for maxillofacial cysts detection...
February 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28174367/collagen-and-its-role-in-predicting-the-biological-behavior-of-odontogenic-lesions
#10
Pavan G Kulkarni, M Aruna Kumari, Abhishek Jahagirdar, Srk Nandan, Shyam Prasad Reddy D, M Keerthi
INTRODUCTION: Odontogenic cysts and tumors have variable recurrence rates. Recurrence rate is mainly due to the activity of the epithelium. The epithelium of these lesions has been investigated extensively in regard to their role in proliferative and aggressive behavior of the lesions. However, the role of the connective tissue wall in their behavior has not been studied as extensively. Collagen is an essential part of the connective tissue as a whole and fibrous wall of cystic lesions especially...
February 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28153133/odontogenic-cysts-and-neoplasms
#11
REVIEW
Elizabeth Ann Bilodeau, Bobby M Collins
This article reviews a myriad of common and uncommon odontogenic cysts and tumors. The clinical presentation, gross and microscopic features, differential diagnosis, prognosis, and diagnostic pitfalls are addressed for inflammatory cysts (periapical cyst, mandibular infected buccal cyst/paradental cyst), developmental cysts (dentigerous, lateral periodontal, glandular odontogenic, orthokeratinized odontogenic cyst), benign tumors (keratocystic odontogenic tumor, ameloblastoma, adenomatoid odontogenic tumor, calcifying epithelial odontogenic tumor, ameloblastic fibroma and fibroodontoma, odontoma, squamous odontogenic tumor, calcifying cystic odontogenic tumor, primordial odontogenic tumor, central odontogenic fibroma, and odontogenic myxomas), and malignant tumors (clear cell odontogenic carcinoma, ameloblastic carcinoma, ameloblastic fibrosarcoma)...
March 2017: Surgical Pathology Clinics
https://www.readbyqxmd.com/read/28149484/maxillary-peripheral-keratocystic-odontogenic-tumor-a-clinical-case-report
#12
María Del Carmen Vázquez-Romero, María de Los Angeles Serrera-Figallo, Javier Alberdi-Navarro, Javier Cabezas-Talavero, Manuel-María Romero-Ruiz, Daniel Torres-Lagares, Jose-Manuel Aguirre-Urizar, Jose-Luis Gutiérrez-Pérez
The keratocystic odontogenic tumor is a benign odontogenic cystic neoplasia characterized by its thin, squamous epithelium with superficial parakeratosis. It has the potential for infiltration and local aggressiveness and has a high rate of recurrence. This neoplasia is predominantly found in males and people of white origin. The mandible is the most frequently involved site, in particular the third molar region, mandibular angle, and ramus. It has a mandible-maxilla ratio of 2:1. Only about twenty cases of peripheral keratocystic odontogenic tumors (PKCOT) have been reported in the international literature...
January 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28123497/odontogenic-epithelial-proliferation-is-correlated-with-cox-2-expression-in-dentigerous-cyst-and-ameloblastoma
#13
Mohammed Amjed Alsaegh, Hitoshi Miyashita, Takahiro Taniguchi, Sheng Rong Zhu
Investigation of cyclooxygenase (COX)-2 in dentigerous cyst and ameloblastoma may help to improve understanding of the nature and behavior of odontogenic cysts and tumors, and in addition may eventually represent a definitive target for a pharmacological approach in the management of these lesions. The aim of this study was to evaluate COX-2 expression and its correlation with the proliferation of odontogenic epithelium in these lesions. Dentigerous cysts (n=16) and ameloblastomas (n=17) were evaluated. Detection of Ki-67 and COX-2 protein expression was conducted by immunohistochemistry...
January 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28105241/primary-intraosseous-squamous-cell-carcinoma-of-the-mandible-arising-from-an-infected-odontogenic-cyst-a-case-report-and-review-of-the-literature
#14
Koenraad Grisar, Matthias Schol, Esther Hauben, Joseph Schoenaers, Constantinus Politis
Primary intraosseous squamous cell carcinoma (PIOSCC) derived from a odontogenic cyst is a rare form of odontogenic carcinoma. The incidence of carcinomas arising from odontogenic cysts is particularly uncommon and is reported to occur in 1-2 individuals for every 1,000 cases. The present case describes a 25-year-old man who was initially diagnosed with a chronically infected odontogenic cyst of the mandible. Biopsy and subsequent histology revealed the presence of squamous cell carcinoma. Therefore, neck dissection and hemimandibulectomy were performed...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28089087/prevalence-profile-of-odontogenic-cysts-and-tumors-on-brazilian-sample-after-the-reclassification-of-odontogenic-keratocyst
#15
Filipe Jaeger, Mariana Saturnino de Noronha, Maiza Luiza Vieira Silva, Márcio Bruno Figueiredo Amaral, Soraya de Mattos Carmago Grossmann, Martinho Campolina Rebello Horta, Paulo Eduardo Alencar de Souza, Maria Cássia Ferreira de Aguiar, Ricardo Alves Mesquita
PURPOSE: The aim of this study was to evaluate the impact of the reclassification of odontogenic keratocyst (OKC) as a tumor on the prevalence profile of odontogenic cysts (OCs) and odontogenic tumors (OTs). STUDY DESIGN: Two referral Oral and Maxillofacial Pathology services in Brazil were evaluated. All cases diagnosed as OCs or OTs were selected and classified according to the 1992 WHO-classification (cases before 2005 WHO classification of tumors excluding OKC) and the 2005 WHO classification of tumors, going forward including cases of odontogenic keratocyst tumor (KCOT)...
December 18, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28060370/diagnosing-the-most-common-odontogenic-cystic-and-osseous-lesions-of-the-jaws-for-the-practicing-pathologist
#16
Robert A Robinson
Odontogenic cysts and osseous lesions are often seen as challenging diagnostic lesions but the majority of them are easily classified. This article outlines the diagnostic features required for separating the most common of odontogenic cysts and select osseous lesions of the jaws. Clinical and radiographic findings of these jaw lesions often lead to a differential diagnosis that only the histologic findings will clarify. Dentigerous cyst, keratocystic odontogenic tumor, and certain ameloblastomas that have cystic change, may have identical radiographic findings, with only separation by their specific histologic features leading to the significantly different treatments required for each...
January 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28054463/kallikrein-related-peptidase-expression-in-odontogenic-cysts-and-tumors-an-immunohistochemical-comparative-study
#17
Mark Roger Darling, Rebecca Woodford, Karl Kevin Cuddy, Linda Jackson-Boeters, Alyssa Hayter, Jeyanth Inkaran, Eleftherios P Diamandis, Zia Khan
AIM: The aim of the present study was to profile the expression of human kallikrein (KLK)-related peptidases (KLK) in odontogenic lesions. METHODS: Paraffin-embedded, formalin-fixed, non-odontogenic (control) and odontogenic lesions were stained for KLK using a standard immunohistochemical technique. The intensity and proportion of epithelial cells stained was scored. Reverse transcription-polymerase chain reaction was utilized to evaluate KLK 1-15 mRNA expression in ameloblastomas...
January 4, 2017: Journal of Investigative and Clinical Dentistry
https://www.readbyqxmd.com/read/28025428/expression-of-p73-and-trail-in-odontogenic-cysts-and-tumors
#18
Marco Mascitti, Andrea Santarelli, Antonio Zizzi, Maurizio Procaccini, Lorenzo Lo Muzio, Corrado Rubini
Odontogenic tumors are a group of lesions arising from the odontogenic apparatus. Although the mechanism of oncogenesis and tumor progression in these lesions remains unknown, certain proteins, such as those involved in apoptosis, seem to be involved in the differentiation and proliferation of odontogenic epithelial cells. The aim of this study was to analyze the expression of p73 and TNF-related apoptosis-inducing ligand (TRAIL) in odontogenic tumors and cysts, and to clarify changes in the expression of these proteins...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/27994430/nonsurgical-endodontic-therapy-along-with-minimal-invasive-treatment-utilizing-bhasker-s-hypothesis-for-the-management-of-infected-radicular-cystic-lesion-a-rare-case-report
#19
Sanjeev Kumar Salaria, Shilpa Kamra, Simrat Kaur Ghuman, Garima Sharma
Radicular cyst (RC) is the most common odontogenic cyst of inflammatory origin affecting the jaws; involves the roots of the carious or traumatic non-vital tooth. Different therapeutic modalities, such as nonsurgical endodontic therapy or surgical enucleation with primary closure, decompression etc., were proposed for the management of such lesions. Presenting a case of a 28-year-old otherwise healthy male patient who reported with pain and swelling with respect to tooth #41, 31. Diagnosis of infected RC at a rare location was established on the basis of clinical, radiographical and fine needle aspiration cytological examination...
October 2016: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/27992735/morphological-classification-of-odontogenic-keratocysts-using-bouligand-minkowski-fractal-descriptors
#20
Joao B Florindo, Odemir M Bruno, Gabriel Landini
The Odontogenic keratocyst (OKC) is a cystic lesion of the jaws, which has high growth and recurrence rates compared to other cysts of the jaws (for instance, radicular cyst, which is the most common jaw cyst type). For this reason OKCs are considered by some to be benign neoplasms. There exist two sub-types of OKCs (sporadic and syndromic) and the ability to discriminate between these sub-types, as well as other jaw cysts, is an important task in terms of disease diagnosis and prognosis. With the development of digital pathology, computational algorithms have become central to addressing this type of problem...
February 1, 2017: Computers in Biology and Medicine
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