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https://www.readbyqxmd.com/read/29745448/early-development-of-the-human-dentition-revisited
#1
REVIEW
Maria Hovorakova, Herve Lesot, Miroslav Peterka, Renata Peterkova
In this review, classical data on the early steps in human odontogenesis are summarized and updated with specific insights into the development of the upper and lower embryonic jaws to help in understanding some oral pathologies. The initial step of human odontogenesis is classically characterized by two parallel horseshoe-shaped epithelial laminae. These originate from the oral epithelium and an ingrowth into the jaw mesenchyme: the internal dental lamina gives rise to deciduous tooth primordia, while the external vestibular lamina represents the developmental base of the oral vestibule...
May 10, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29731577/expression-of-ki-67-in-odontogenic-cysts-a-comparative-study-between-odontogenic-keratocysts-radicular-cysts-and-dentigerous-cysts
#2
Tapan G Modi, Monali Chalishazar, Malay Kumar
Introduction and Objectives: Odontogenic cysts are the most common cysts of the jaws and are formed from the remnants of the odontogenic apparatus. Among these odontogenic cysts, radicular cysts (RCs) (about 60% of all diagnosed jaw cysts), dentigerous cysts (DCs) (16.6% of all jaw cysts) and odontogenic keratocysts (OKCs) (11.2% of all developmental odontogenic cysts) are the most common. The behavior of any lesion is generally reflected by its growth potential. Growth potential is determined by measuring the cell proliferative activity...
January 2018: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/29690701/-progress-in-the-diagnosis-of-florid-cemento-osseous-dysplasia
#3
P Y Zhang, C Xiao
Florid cemento-osseous dysplasia (FLCOD) is a rare, extensive bone metabolism disorder, which occurs only in the jaw bone. It is usually asymptomatic for a long time and discovered incidentally during a radiological examination. The characteristics of FLCOD in the initial stages are similar to those of periapical granuloma or jaw cyst, which may lead to misdiagnosis. After the lesion is mature, the imaging findings show that radiopaque with a thin radiolucent peripheral halo, which is crucial for the diagnosis of FLCOD, but other jaw lesions have similar imaging findings...
April 9, 2018: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/29618163/differential-diagnosis-between-a-granuloma-and-radicular-cyst-effectiveness-of-magnetic-resonance-imaging
#4
G Lizio, E Salizzoni, M Coe, M R Gatto, S Asioli, T Balbi, G A Pelliccioni
AIM: To investigate the diagnostic reliability and accuracy of magnetic resonance imaging (MRI) to differentiate periapical lesions of endodontic origin and to compare the results with histopathological information. METHODOLOGY: The radiolucent periapical jaw lesions of 34 patients, which were surgically enucleated, were investigated by two radiologists using MRI, based on the same six criteria, to categorize the lesions as granulomas, radicular cysts or others...
April 4, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29521748/delayed-diagnosis-of-gorlin-goltz-syndrome-the-importance-of-the-multidisciplinary-approach
#5
Jéssica Araújo Figueira, Fábio Roberto de Souza Batista, Karina Rosso, Vanessa Cristina Veltrini, Angelo José Pavan
Gorlin-Goltz syndrome (GGS), also known as nevoid basal cell carcinoma syndrome, is an autosomal dominant inherited disorder with high penetrance and variable expressivity. The classic triad originally described by Gorlin and Goltz in 1960 is composed of multiple nevoid basal cell carcinomas (NBCCs), odontogenic keratocysts (OKCs) in the jaws and bifid ribs. in 1977, this triad was modified by Rayner et al, and to GGS diagnosis, the OKCs had to appear in combination with calcification of the cerebellar falx or palmar and plantar pits...
March 8, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29480235/3d-cone-beam-computed-tomography-reconstruction-images-in-diagnosis-of-ameloblastomas-of-lower-jaw-a-case-report-and-mini-review
#6
Dize Li, Zhiqiang Yang, Tao Chen, Chao Guan, Feilong Wang, Ethan L Matz, Yuanyuan Zhang, Ping Ji
Cone beam computed tomography (CBCT) has obvious advantages over regular radiography in diagnosis of complex diseases. Objective of this study is to report a case of a mandibular jaw ameloblastoma recurring cyst, which represents a benign tumor of odontogenic epithelium, using CBCT imaging technology. CBCT examination of the patient suffering with recurrent lower jaw cyst (relapsing four years after surgery) showed a decrease in irregular bone density and appearance of a honeycomb pattern (3.5 cm×2.5 cm×1...
2018: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/29426795/cholesterol-granuloma-of-the-maxilla
#7
N Baldini, A Pare, S Badja, A Veyssiere, J D Kün-Darbois
Intra-osseous cholesterol granuloma (CG) is a rare and benign lesion. Very few cases of CG of the jaws have been described in the literature. CG of the jaws seems to be due to the accumulation of cholesterol of hematogenous origin in odontogenic cysts. We report on one case of CG of the maxilla treated by surgical enucleation in a 46-year-old man who presented an asymptomatic swelling of the maxilla.
March 2018: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/29414392/spatial-distribution-of-osteopontin-cd44v6-and-podoplanin-in-the-lining-epithelium-of-odontogenic-keratocyst-and-their-biological-relevance
#8
Khamisah Awang Kechik, Chong Huat Siar
BACKGROUND AND AIMS: The odontogenic keratocyst (OKC) remains the most challenging jaw cyst to treat because of its locally-aggressive behaviour and high recurrence potential. Emerging evidence suggests that osteopontin, its receptors CD44v6 and integrin αv , and podoplanin, have a role in the local invasiveness of this cyst. However the spatial distribution characteristics of these pro-invasive markers in the lining epithelium of OKC, and their association with the clinicopathologic parameters of OKC are largely unexplored...
February 2018: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/29396318/treatment-of-enucleated-odontogenic-jaw-cysts-a-systematic-review
#9
REVIEW
Mayte Buchbender, Friedrich W Neukam, Rainer Lutz, Christian M Schmitt
OBJECTIVES: In this systematic review, we aimed to assess the impact of filling or not filling enucleated odontogenic jaw cysts on bony defect consolidation. In terms of filling, we aimed to assess which is the best filling material based on current evidence. STUDY DESIGN: An electronic search was performed using PubMed, Embase, and MEDLINE databases with the logical operators: "odontogenic cysts" AND "jaw cysts" AND "treatment AND therapy...
December 29, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29391734/quantitative-assessment-of-silver-stained-nucleolar-organizer-region-in-odontogenic-cysts-to-correlate-the-growth-and-malignant-potentiality
#10
Sailendra Nath Biswas, R R Paul, Jay Gopal Ray, Sumit Majumdar, Divya Uppala
Context: The most common and important odontogenic cyst involving jaws is the odontogenic keratocyst (OKC) or primordial cyst, the dentigerous cyst and the radicular cyst. These cysts all though do not show similar behavior, they all have the potentiality to recur. Silver nitrate staining of the nucleolar organizer regions (AgNORs) of the benign and malignant lesions is becoming very useful as a diagnostic indicator. Thus, the aim of this study is to assess the diagnostic potential of AgNORs in the cystic epithelium of common odontogenic cysts...
September 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/29352614/who-is-in-and-who-is-out-of-the-mouth-salivary-glands-and-jaws-sections-of-the-4th-edition-of-the-who-classification-of-head-and-neck-tumours
#11
REVIEW
R A Kennedy
This review of changes to the 4th edition of the WHO classification of head and neck tumours focuses on their impact on the surgical care of diseases that affect the salivary glands, jaws, and oral cavity. Updates to the chapter on the salivary glands include the addition of secretory carcinoma and sclerosing polycystic adenosis. The odontogenic cysts are back, and the odontogenic keratocyst is listed among them, as it has now lost its brief and confusing designation as a neoplasm. The newly-defined sclerosing odontogenic carcinoma and primordial odontogenic tumour have been added...
February 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29326523/glandular-odontogenic-cyst-case-series
#12
Gokhan Gurler, Humam Al-Ghamian, Nihan Aksakalli, Cagri Delilbasi
Glandular odontogenic cyst (GOC) is an uncommon and aggressive jaw cyst with a high recurrence rate. It may grow into a large size. Diagnosis of the cyst is challenging since it may be confused with some other jaw cysts and malignancies. Treatment methods vary from conservative surgery to radical bone resection. In this case series, we briefly present five cases of GOC diagnosed and treated at our clinic. Thorough histopathological diagnosis and long-term follow-up are necessary in patients with GOC.
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29322252/-cystic-lesions-of-the-jaws
#13
D Baumhoer, S Höller
Cystic lesions of the jaws comprise a spectrum of inflammatory, developmental and neoplastic changes that can clinically appear strikingly similar. Squamous cell metaplasia due to superinfection can further blur the histologic hallmarks of the individual lesions. In this article an overview of the most important differential diagnoses and the novelties of the latest World Health Organisation (WHO) classification on head and neck tumours released in early 2017 is provided. In contrast to the previous edition, odontogenic cysts have been re-introduced and several changes in terminology and taxonomy have been complemented...
February 2018: Der Pathologe
https://www.readbyqxmd.com/read/29287708/intratarsal-keratinous-eyelid-cysts-in-gorlin-syndrome-a-review-and-reappraisal
#14
REVIEW
Natalie Wolkow, Frederick A Jakobiec, Michael K Yoon
A 38-year-old woman presented with multiple bilateral recurrent eyelid cysts. Her medical history was notable for Gorlin (nevoid basal cell carcinoma) syndrome. Histopathologic and immunohistochemical examinations revealed that the lesions were intratarsal keratinous cysts. They were similar in appearance to sporadic intratarsal keratinous cysts and closely resembled odontogenic keratocysts of the jaw. Eyelid cysts occur in up to 40% of patients with Gorlin syndrome; however, their description has been cursory and, for the most part, outside of the ophthalmic literature...
December 27, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/29243681/conservative-management-of-large-mandibular-dentigerous-cysts-with-a-novel-approach-for-follow-up-two-case-reports
#15
Ieva Gendviliene, Paul Legrand, Laura Ferreira Pinheiro Nicolielo, Deepti Sinha, Yannick Spaey, Constantinus Politis, Reinhilde Jacobs
BACKGROUND: Dentigerous cysts are odontogenic cysts of the jaws accounting for approximately 24% of all epithelium-lined jaw cysts. Rarely, these cysts can become extremely large causing additional symptoms, while challenging treatment. This article represents a novel approach for radiological treatment follow up of large dentigerous cysts. MATERIAL AND METHODS: Dentigerous cysts were treated by marsupialization, using dedicated obturators and enucleation of the cyst afterwards...
2017: Stomatologija
https://www.readbyqxmd.com/read/29233700/volumetric-analysis-of-keratocystic-odontogenic-tumors-and-non-neoplastic-jaw-cysts-comparison-and-its-clinical-relevance
#16
Martin Kauke, Ali-Farid Safi, Andrea Grandoch, Hans-Joachim Nickenig, Joachim Zöller, Matthias Kreppel
The keratocystic odontogenic tumor (KCOT) is capable of causing vast osseous destruction. Histopathological examination is pivotal for diagnosis. The diagnostic process can sometimes be hindered by tissue inflammation of KCOTs with loss of defining criteria, resulting in misdiagnosis as an odontogenic jaw cyst. We discuss the possible merits of volumetric analysis when facing this particular diagnostic dilemma and for pathophysiological characterization of KCOTs. We included 114 patients, of whom 27 were histopathologically diagnosed with a KCOT and 87 with dentigerous (n = 41) and periapical cyst (n = 46)...
February 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29201968/clinicopathologic-study-of-intra-osseous-lesions-of-the-jaws-in-southern-iranian-population
#17
Zohreh Jaafari-Ashkavandi, Behrooz Akbari
Statement of the Problem: It is necessary for surgeons and practitioners to know about relative incidence and clinicopathologic features of lesions for accurate diagnosis and approach of pathologic lesions. Data are limited about overall incidence of intra-osseous lesions of the jaws in Iranian patients. Purpose: This study evaluated the clinicopathologic features of intra- osseous lesions of the jaws in an Iranian population, in a 22-year period. Materials and Method: In this cross- sectional retrospective analytical study, 4500 specimens in a 22- year period were reviewed...
December 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/29187222/unusual-presentation-of-plasmablastic-lymphoma-involving-ovarian-mature-cystic-teratoma-a-case-report
#18
Ita Hadžisejdić, Emina Babarović, Luka Vranić, Antica Duletić Načinović, Ksenija Lučin, Maja Krašević, Nives Jonjić
BACKGROUND: Plasmablastic lymphoma (PBL) is relatively new clinical entity described as a distinct subtype of diffuse large B-cell lymphoma (DLBCL). It is characterized by its aggressive nature and proliferation of large neoplastic cells resembling immunoblasts including cells with more obvious plasmacytic differentiation. In this case report, we describe an unexpected finding of PBL associated with a mature cystic teratoma of the ovary in a young immune competent woman. CASE PRESENTATION: A 19-year old woman was admitted to the hospital with generalized lymphadenopathy, a pelvic tumor mass measuring 35 × 30 cm and a 4 cm lump in her right breast...
November 29, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/29184270/recurrent-psammomatoid-juvenile-ossifying-fibroma-with-aneurysmal-bone-cyst-an-unusual-case-presentation
#19
Swati S Gotmare, Avinash Tamgadge, Sandhya Tamgadge, Kashmira S Kesarkar
Juvenile ossifying fibroma (JOF) is a rare, benign, locally aggressive entity of the extragnathic craniofacial bones with a high tendency towards recurrence. Two distinctive microscopic patterns of juvenile ossifying fibroma have been described: a trabecular juvenile ossifying fibroma (TrJOF) and a psammomatoid juvenile ossifying fibroma (PJOF). Psammomatoid variant is predominantly a craniofacial lesion and occurs rarely in the jaws. The pathognomonic histopathologic feature is the presence of spherical ossicles, which are similar to psammoma bodies...
November 2017: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29167684/demographic-profile-of-non-odontogenic-jaw-lesions-in-an-iranian-population-a-30-year-archive-review
#20
Fereshteh Baghai Naini, Pouyan Aminishakib, Maedeh Ghorbanpour, Mohammad Mehdi Vakili, Mohammad Javad Kharazifard
Objectives: The frequency of non-odontogenic lesions of the jawbones is lower than that of odontogenic lesions; however, study of the epidemiologic data of these lesions is required for health care programs. This study aimed to assess the relative frequency and demographic profile of non-odontogenic jaw lesions in an Iranian population over a 30-year period. Materials and Methods: This archive review was performed using demographic and biopsy information of all patients with non-odontogenic lesions of the jawbones submitted to the Oral Pathology Department of Dental School of Tehran University of Medical Sciences from 1984 to 2014...
May 2017: Journal of Dentistry of Tehran University of Medical Sciences
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