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Odontogenic tumor

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https://www.readbyqxmd.com/read/28806541/surgical-management-of-an-aggressive-multifocal-squamous-odontogenic-tumor
#1
Pieter-Jan Verhelst, Laury Grosjean, Eman Shaheen, Constantinus Politis
Squamous odontogenic tumor is a rare benign epithelial odontogenic tumor of the jaw. Most are solitary lesions, although rare multifocal lesions have been described. Maxillary lesions have more aggressive behavior. Because of their benign character, these lesions are usually treated using a conservative surgical approach with curettage and surgical enucleation. This report describes the case of a 29-year-old woman with multifocal lesions who was initially treated with conservative surgical therapy. Early recurrence 6 months after surgery prompted more aggressive resection...
July 21, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28798004/clear-cell-variant-of-calcifying-epithelial-odontogenic-tumor-a-rare-clinical-entity
#2
Husain Sabir, Subhash Kumbhare, Saurabh Redij, Namrata Gajbhiye
Calcifying epithelial odontogenic tumor (CEOT) is a rare benign odontogenic neoplasm of the jaws. Although clear cells have been reported in approximately 8% of cases of CEOT, the exact nature of these cells in clear cell calcifying epithelial odontogenic tumor (CCEOT) has not been elucidated. Presence of clear cells in CEOT may confer a more aggressive behavior to the lesion and a tendency for recurrence and metastatic spread. We report of a case of CCEOT in a 63 year old female patient which was first treated with enucleation; however recurrence prompted a segmental resection along with coronoid and condyle...
May 2017: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28770159/peripheral-odontogenic-myxoma-in-a-12-year-old-girl-a-rare-entity
#3
Sampada Kanitkar, Mamata Kamat, Sridevi Tamagond, Aniruddha Varekar, Uma Datar
Peripheral odontogenic myxoma is a rare odontogenic tumor representing an extra osseous counterpart of central odontogenic myxoma. It is commonly seen in gingiva between the 3rd and 4th decades of life and appears predominantly in females. Compared to central odontogenic myxoma, it is a less aggressive, slow-growing lesion with a low recurrence rate. However, close postoperative follow-up is required because of the unlimited growth potential of incompletely removed lesions. It shares many features with other soft tissue myxoid proliferations occurring in the oral cavity and hence needs to be differentiated from them...
June 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28762440/the-use-of-oral-and-maxillofacial-pathology-services-by-general-pathologists-and-their-attitude-towards-it-in-saudi-arabia
#4
Nada O Binmadi, Soulafa A Almazrooa
To investigate the awareness and usage of oral and maxillofacial pathology (OMFP)  subspecialty services among pathologists in Saudi Arabia. Methods: In this cross-sectional study, we conducted an electronic questionnaire survey of pathologists in all regions of Saudi Arabia. The study was conducted between July 2015 and August 2016.  The questionnaire comprised 19 questions to evaluate the knowledge of pathologists regarding microscopic OMFP and their perceptions towards this subspecialty. Results: Most of the pathologists surveyed (94...
August 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28761280/recurrent-keratocystic-odontogenic-tumor-of-right-maxillary-sinus-involving-the-right-infraorbital-rim
#5
Karthikeyan Maruthamuthu, G Vasupradha, Janardhanam Dineshshankar, Abishek Rajaram Balaji
Keratocystic odontogenic tumor (KCOT) is a benign odontogenic tumor with an aggressive behavior and high recurrence rate. The most common site of predilection is the posterior mandible. In contrast, KCOTs occurring in the maxillary region are relatively rare. However, the maxillary involvement poses a greater and increased threat, due to proximity to vital structures such as maxillary sinus, orbital floor, and infratemporal fossa. This report presents such a case of KCOT involving the maxillary sinus eroding the floor of the orbit and provides an account of the factors that need to be considered during management...
January 2017: National Journal of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28725126/odontogenic-myxoma-a-review-with-report-of-an-uncommon-case-with-recurrence-in-the-mandible-of-a-teenage-male
#6
REVIEW
C Shivashankara, Madhumati Nidoni, Shrish Patil, K T Shashikala
We describe a 13-year-old boy with recurrence of an odontogenic myxoma of the mandible. We review the existing published literature on the lesion, emphasizing the similarities and differences among lesions in the differential diagnosis. Odontogenic myxoma is an uncommon benign tumor that mainly affects the mandible, with a peak incidence in the second to fourth decades of life and predilection for the female sex. Clinical, radiological, and histopathological features should be considered when making a diagnosis...
July 2017: Saudi Dental Journal
https://www.readbyqxmd.com/read/28721660/clinicopathologic-and-molecular-characteristics-of-familial-cherubism-with-associated-odontogenic-tumorous-proliferations
#7
Prokopios P Argyris, Rajaram Gopalakrishnan, Ying Hu, Ernst J Reichenberger, Ioannis G Koutlas
Cherubism is a rare autosomal dominant condition affecting the jaws and caused by mutations in the gene encoding for the adapter protein SH3BP2 that maps to chromosome 4p16.3. Cherubism is characterized by symmetrically developing bone lesions in the maxilla and mandible. The lesions have been radiographically and histopathologically well-described. Here, we present a family with cherubism with two of its members featuring odontogenic tumorous proliferations in association with persistent central giant cell lesions (CGCL)...
July 18, 2017: Head and Neck Pathology
https://www.readbyqxmd.com/read/28721317/ameloblastic-fibrodentinoma-a-case-with-varied-patterns-of-dysplastic-dentin
#8
Radhika M Bavle, Sudhakara Muniswammappa, Reshma Venugopal, Amulya S R
Ameloblastic fibrodentinoma is a benign odontogenic tumor belonging to the category of "odontogenic epithelium with odontogenic ectomesenchyme" along with recognition of induction in the form of dentin in atypical or dysplastic forms. The biological behaviour of ameloblastic fibrodentinoma is not very different from ameloblastic fibroma; hence, it is treated similarly by conservative procedures. It is important to understand the histopathogenesis of these rare tumors. Though rare, they are an independent entity awaiting recognition...
June 14, 2017: Curēus
https://www.readbyqxmd.com/read/28717298/ameloblastic-carcinoma-a-rare-malignant-tumour-in-maxillofacial-region
#9
Pushkar Devidas Gawande, Kiran Khande, Gaurav Agrawal, Amita Aditya
Ameloblastic carcinoma (AC) is a rare malignant odontogenic tumor with poor prognosis. It has an aggressive clinical course with extensive local destruction. It occurs primarily in the mandible. It may clinically present as a cystic lesion with benign clinical feature or as a large mass with ulceration, significant bone resorption and mobility of teeth in the affected region. Reliable evidence of it's biological activity along with extensive local destruction, direct extension of tumor, lymph node involvement and metastasis to various sites (frequently lung) have been reported...
September 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28713753/removal-of-multiple-keratocystic-odontogenic-tumors-in-a-nonsyndromic-patient
#10
Artur Cunha Vasconcelos, Paulo Henrique de Souza Castro, Alvaro Henrique Borges, Luiz Evaristo Ricci Volpato
Multiple keratocystic odontogenic tumors are one of the key features of Gorlin-Goltz syndrome. A 15-year-old nonsyndromic female child presented with multiple keratocystic odontogenic tumors. The presence of the tumors was observed in immunological examinations. The images led to the suspicion of Gorlin-Goltz syndrome which was discarded after analyzing the patient's medical history and complementary examinations. Le Fort I osteotomy was opted to access the maxillary tumors favoring visibility and allowing simultaneous bilateral accesses...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28713736/using-carnoy-s-solution-in-treatment-of-keratocystic-odontogenic-tumor
#11
Najwa Jameel Alchalabi, Ahmed Maki Merza, Sabah Abdulaziz Issa
AIM: The aim of this study was to assess the treatment of keratocystic odontogenic tumor using enucleation and Carnoy's solution with peripheral ostectomy. MATERIALS AND METHODS: Twenty-nine patients (14 females and 15 males) with age range from 12 to 62 years were included in this study and followed up for 7 years; all the patients were treated in the Department of Oral and Maxillofacial Surgery of the Specialized Surgeries Teaching Hospital (Al-Shaheed Ghazi Al-Hariri Hospital-Medical City, Baghdad, Iraq)...
January 2017: Annals of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28706783/the-anecdote-of-viral-etiopathogenia-in-ameloblastoma-and-odontogenic-keratocyst-why-don-t-we-let-it-go
#12
Bacem A E O Khalele
BACKGROUND: Ameloblastoma (AM) and odontogenic Keratocyst (OKC) are destructive odontogenic lesions of the gnathion. Although their exact pathogeneses are not yet totally understood, the viral etiopathogenesis in AM and KCOT has been proposed. True to syndromic keratocystic odontogenic tumor (sKCOT) and non-syndromic OKC is the high recurrence rate. OBJECTIVES: Given that shared pathways trailed by AM and by sKCOT/OKC have been suggested, this study, however, contrasts the expression of AM and OKC for viral antibodies...
May 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/28706782/immunohistochemical-evaluation-of-podoplanin-in-odontogenic-tumours-cysts-using-anti-human-podoplanin-antibody
#13
Namrata Singhal, Nitin Khanduri, Deepak Kurup, Brijesh Gupta, Pranjan Mitra, Roshani Chawla
BACKGROUND: Odontogenic Cysts & tumors originate through some aberration from the normal pattern of odontogenesis. Ameloblastoma is one of the most frequent intraosseous odontogenic tumors. However it is no longer appropriate to use the diagnosis of ameloblastoma without specifying the type. Varied-clinical entities of ameloblastoma differ in their biologic behaviour. Odontogenic cysts like dentigerous and radicular cysts are less aggressive in nature than odontogenic tumors. Recently, podoplanin commonly used as a lymphatic endothelial marker in cancers has recently been found to play a possible role in odontogenic tumorigenesis also...
May 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/28700034/application-of-endoscopy-to-treat-mandibular-keratocystic-odontogenic-tumors
#14
Z Gao, Q W Ni, W Gao, Y P Liu, Q Zhang
The aim of this study was to evaluate the feasibility of endoscopy to remove keratocystic odontogenic tumors (KCOTs) with virtual 3D mandibular images. Fifteen patients (mean age, 40.27±14.58 years) who underwent endoscopic mandibular KCOT enucleation between May 2009 and October 2009 were included. Virtual 3D mandibular reconstructions derived from computed tomography (CT) imaging were generated for all patients. Recurrence and pathological fracture were evaluated as the primary outcome variables at 1 and 12 months after operation...
July 10, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28699252/mesenchymal-stromal-cell-derived-il-6-promotes-epithelial-mesenchymal-transition-and-acquisition-of-epithelial-stem-like-cell-properties-in-ameloblastoma-epithelial-cells
#15
Chunmiao Jiang, Qunzhou Zhang, Rabie M Shanti, Shihong Shi, Ting-Han Chang, Lee Carrasco, Faizan Alawi, Anh D Le
Epithelial-mesenchymal transition (EMT), a biological process associated with cancer stem-like or cancer-initiating cell (CSC) formation, contributes to the invasiveness, metastasis, drug resistance, and recurrence of the malignant tumors; it remains to be determined whether similar processes contribute to the pathogenesis and progression of ameloblastoma, a benign but locally invasive odontogenic neoplasm. Here, we demonstrated that EMT- and stem cell-related genes were expressed in the epithelial islands of the most common histologic variant subtype, the follicular ameloblastoma...
July 11, 2017: Stem Cells
https://www.readbyqxmd.com/read/28691462/odontomas-review-of-the-literature-and-case-reports
#16
C Gervasoni, A Tronchet, S Spotti, S Valsecchi, V Palazzolo, S Riccio, A D Aiuto, L Azzi, A Di Francesco
Odontomas are one of the most common Odontogenic Tumors of the jaw. The exact etiology of odontomas is unknown. Histologically they are composed of various formations of dental tissue (enamel, dentin, cementum and sometimes pulp). In the WHO classification, they are divided into complex odontoma and compound odontoma. Clinically, odontomas are generally asymptomatic and only in rare cases cause swelling, pain, suppuration or bony expansion. Radiologically, the tumor is initially lucent, but with time, it develops small calcifications, which eventually coalesce to form a radiodense lesion with a lucent rim...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28688493/computer-aided-diagnosis-of-periapical-cyst-and-keratocystic-odontogenic-tumor-on-cone-beam-computed-tomography
#17
E Yilmaz, T Kayikcioglu, S Kayipmaz
BACKGROUND AND OBJECTIVES: In this article, we propose a decision support system for effective classification of dental periapical cyst and keratocystic odontogenic tumor (KCOT) lesions obtained via cone beam computed tomography (CBCT). CBCT has been effectively used in recent years for diagnosing dental pathologies and determining their boundaries and content. Unlike other imaging techniques, CBCT provides detailed and distinctive information about the pathologies by enabling a three-dimensional (3D) image of the region to be displayed...
July 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28674562/-ameloblastoma-of-the-maxillary-sinus-treated-with-radiation-therapy
#18
Asmaa Chehal, Rosabel Lobo, Asmaa Naim, Ignacio Azinovic
Ameloblastoma is a benign aggressive odontogenic tumor which requires early diagnosis and appropriate treatment. It commonly affects the mandible and radical surgery is the gold standard treatment. We report the case of a patient with ameloblastoma in extremely advanced phase affecting the maxillary sinus who was treated with intensity modulated conformal radiation therapy. Patient's evolution was marked by complete remission maintained after 24 months follow-up. Maxillary ameloblastoma is not well documented in the literature...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28666498/stafne-bone-cavity-complicated-by-periapical-infection
#19
Fethi Atil, Mehmet Zahit Adisen, Melda Misirlioglu, Berkay Tolga Suer
Stafne bone cavity (SBC) is an uncommon lesion of the mandible; and generally found incidentally on routine radiographic examinations. The radiographic differential diagnosis of SBC includes a variety of lesions including odontogenic cysts, benign tumors, or bone metastases. In the present case, a 22-year female patient was admitted with chief complaint of pain in the right mandibular molar area. On panoramic radiographic examination, a non-specific large radiolucent lesion related to mandibular molar teeth was detected and extra-oral surgical intervention was planned...
November 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28658279/genetic-basis-of-calcifying-cystic-odontogenic-tumors
#20
Akane Yukimori, Yu Oikawa, Kei-Ichi Morita, Chi Thi Kim Nguyen, Hiroyuki Harada, Satoshi Yamaguchi, Kou Kayamori, Akira Yamaguchi, Tohru Ikeda, Kei Sakamoto
Calcifying cystic odontogenic tumors (CCOTs) are benign cystic tumors that form abnormally keratinized ghost cells. Mutations in CTNNB1, which encodes beta-catenin, have been implicated in the development of these tumors, but a causal relationship has not been definitively established. Thus, mutational hot spots in 50 cancer genes were examined by targeted next-generation sequencing in 11 samples of CCOT. Mutations in CTNNB1, but not in other genes, were observed in 10 of 11 cases. These mutations constitutively activate beta-catenin signaling by abolishing the phosphorylation sites Asp32, Ser33, or Ser37, and are similar to those reported in pilomatrixoma and adamantinomatous craniopharyngioma...
2017: PloS One
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