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Rosa ACG, Rosa CA, da Cruz EZ, Alves FF, de Senna AM. Odontogenic myxoma in childhood. HUMAN PATHOLOGY REPORTS 2023; 32:300707. [DOI: 10.1016/j.hpr.2023.300707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2024]
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CDC7 Expression in Selected Odontogenic Tumors. Int J Dent 2022; 2022:6336003. [DOI: 10.1155/2022/6336003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 10/30/2022] [Accepted: 11/03/2022] [Indexed: 11/22/2022] Open
Abstract
Objectives. CDC7 is a serine-threonine kinase that plays a key role in initiating DNA replication. It has been implicated in the growth and invasion of many pathologic lesions and suggested as a diagnostic marker. The aim of this study was to evaluate CDC7 in some odontogenic tumors. Materials and Methods. In this cross-sectional study, 45 cases, including 19 ameloblastomas, 15 dentigerous cysts, 7 ameloblastic fibromas, and 4 adenomatoid odontogenic tumors (AOT), were studied immunohistochemically. ANOVA and post hoc methods were used for statistical analysis. Results. CDC7 expression was observed in 93% of tumors and all dentigerous cysts. The expression rate was low. The results showed a higher expression rate of CDC7 in ameloblastoma and ameloblastic fibroma compared to AOT (
and
, respectively). Ameloblastoma and ameloblastic fibroma were not significantly different in CDC7 expression (
). Conclusion. According to the results, the expression of the CDC7 protein in odontogenic tumors is low. The higher expression of CDC7 in ameloblastoma and ameloblastic fibroma in comparison with AOT confirms the hamartomatous growth of the latter, so it can be considered as a potential diagnostic marker. Future studies with a larger sample size are suggested to obtain a cut-off point for diagnostic purposes.
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Subepithelial Hyalinisation Predicts Recurrence of Unicystic Ameloblastomas. Diagnostics (Basel) 2022; 12:diagnostics12030756. [PMID: 35328310 PMCID: PMC8947464 DOI: 10.3390/diagnostics12030756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/10/2022] [Accepted: 03/16/2022] [Indexed: 11/16/2022] Open
Abstract
The inductive effect of hyalinisation and its influence on the biologic behaviour of ameloblastoma variants represent a scarcely researched domain of oral pathology. The complexity of the induction effects within the odontogenic apparatus, with the involvement of both ectodermal and mesodermal tissues, is responsible for diverse histopathological characteristics, hyalinisation being the major feature. The present study aims to deduce for the first time the correlation between the severity of hyalinisation (SOH) and recurrence in three unicystic ameloblastoma (UA) variants, namely, intra-luminal (UA-IL), luminal (UA-L) and mural (UA-M). Retrospectively diagnosed archival cases of UA-IL (n = 08), UA-L (n = 22) and UA-M (n = 30) were assessed for SOH and its correlation with recurrence. A subgroup comparison (between UA-IL/UA-L and UA-M) was also performed. The clinical parameters of the patients were also analysed from files for clinicopathological correlation with recurrence. Results: sub-epithelial hyalinisation (SEH) significantly correlated with the recurrence of UA-L and UA-M (p = 0.001). When the histologic types (UA-L and UA-IL vs. UA-M) were grouped and the correlation of SOH with recurrence was checked, it was observed that both groups (p = 0.001) showed strong statistical correlation. UA-M lesions with multilocular radiolucency (p = 0.001) also showed significant correlation with recurrence. SOH can be a reliable histological predictor of recurrence and of aggressive biologic behaviour in UA. The present study shows a significant association of hyalinisation with the biologic behaviour of UA. Further studies with immunohistochemical investigations could validate the presence of hyalinisation and identify the origin of the hyalinised product in UAs.
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Augustine D, Rao RS, Patil S. Hyalinization as a histomorphological risk predictor in oral pathological lesions. J Oral Biol Craniofac Res 2021; 11:415-422. [PMID: 34094841 DOI: 10.1016/j.jobcr.2021.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 04/11/2021] [Accepted: 05/02/2021] [Indexed: 10/21/2022] Open
Abstract
Background Hyalinization is a process of conversion of stromal connective tissue into a homogeneous, acellular translucent material. Nevertheless, hyalinization could provide insights into the biologic behaviour and prognosis of pathological lesions. Few studies with limited sample size have intended to assess the correlation of hyalinization and biologic behaviour in oral lesions. Aim The current review aims to comprehensively appraise the mechanism of hyalinization in pathological oral hyalinizing lesions (OHL) and its clinical implications with emphasis on differential stains employed. Methods An electronic search was performed in the PubMed database (from year 2000-2020) using the keywords "special stains in oral hyalinizing lesions", "significance of hyalinization in oral lesions" and "hyalinization and biologic behaviour". Original research articles analyzing the effect of hyalinization on biologic characteristics of the lesion were evaluated in this review. Narrative review articles that provided insights into the mechanism of hyalinization and maturity of collagen fibers were also considered for analysis. Conclusion The presence of hyalinization does seem to have a significant effect on the biologic behaviour of pathological lesions. There is substantial scope to further investigate the process of hyalinization on larger samples and its correlation with the aggressive behaviour of OHLs. Special stains and advanced investigations such as immunohistochemistry for stromal markers would define the nature of hyalinized material and validate the correlation. Clinical significance The prediction of the biologic behaviour of a lesion established through assessment of hyalinization would prevent unwanted over or under treatment leading to a better prognosis.
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Affiliation(s)
- Dominic Augustine
- Department of Oral Pathology and Microbiology, Faculty of Dental Sciences, MS Ramaiah University of Applied Sciences, MSR Nagar, Bengaluru, 560054, Karnataka, India
| | - Roopa S Rao
- Department of Oral Pathology and Microbiology, Faculty of Dental Sciences, MS Ramaiah University of Applied Sciences, MSR Nagar, Bengaluru, 560054, Karnataka, India
| | - Shankargouda Patil
- Department of Maxillofacial Surgery and Diagnostic Sciences, Division of Oral Pathology, College of Dentistry, Jazan University, Jazan, Saudi Arabia
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Abstract
Odontogenic tumors are a group of neoplastic growths that originate from the tissues responsible for tooth formation and the periodontal apparatus of the jaw. Odontogenic tumors usually present as radiolucent defect, which makes diagnosis somewhat confusing while differentiating them from cysts. Although cystic lesions are surrounded by sclerotic borders, few odontogenic tumors share similar features. This article reviews clinical concepts of several odontogenic tumors that occur in the proximity or in association with teeth and not merely focusing on relatively common conditions.
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Affiliation(s)
- Arvind Babu Rajendra Santosh
- School of Dentistry, Faculty of Medical Sciences, The University of the West Indies, Mona campus, Kingston 7, Jamaica, West Indies.
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Soyele OO, Effiom OA, Lawal AO, Nwoga MC, Adebiyi KE, Aborisade A, Olatunji AS, Olawuyi AB, Ladeji AM, Okiti RO, Adeola HA. A multi-centre evaluation of malignant odontogenic tumours in Nigeria. Pan Afr Med J 2019; 33:18. [PMID: 31312334 PMCID: PMC6615768 DOI: 10.11604/pamj.2019.33.18.16179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 01/29/2019] [Indexed: 02/06/2023] Open
Abstract
Introduction odontogenic tumors originate from neoplastic transformation of the remnants of tooth forming apparatus. There are varying degrees of inductive interactions between odontogenic ectomesenchyme and epithelium during odontogenesis, leading to lesions that vary from benign to malignant. Malignant odontogenic tumours (MOTs) are very rare and are classified according to embryonic tissue of origin. Recently, there has been a few changes to the classification of MOTs according to the World Health Organization's (WHO) classification in 2017. This study aims to evaluate and reclassify MOTs, using a multi-centre approach in some major tertiary dental hospitals in Nigeria. Methods this study reviewed the clinicopathological data on 63 cases of MOT diagnosed over 25 years in five major tertiary dental hospitals in Nigeria. All MOT cases were reclassified according to the recent revision to the 2017 WHO classification of odontogenic tumours. Results from a total of 10,446 biopsies of oral and jaw lesions seen at the 5 study centres over the 25-year study period, 2199 (21.05%) cases were found to be odontogenic tumours (OTs), of which 63 were MOT. MOTs constituted 0.60% of the total biopsy cases and 2.86% of OTs. Odontogenic carcinomas presented with a mean age higher than odontogenic sarcomas. According to our 2017 WHO reclassification of MOTs, odontogenic carcinomas, ameloblastic carcinomas and primary intraosseous carcinomas were found to be the top three lesions, respectively. Carcinosarcomas were found to be extremely rare. Conclusion using a multi-centre approach is a robust way to reduce diagnostic challenges associated with rare maxillofacial lesions such as MOTs.
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Affiliation(s)
- Olujide Oladele Soyele
- Department of Oral Maxillofacial Surgery and Oral Pathology, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Olajumoke Ajibola Effiom
- Department of Oral and Maxillofacial Pathology and Biology, College of Medicine, University of Lagos, Lagos, Nigeria
| | - Ahmed Oluwatoyin Lawal
- Department of Oral Pathology, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Mark Chukwuemeka Nwoga
- Oral Pathology Unit, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry University of Nigeria, Enugu, Nigeria
| | - Kehinde Emmanuel Adebiyi
- Department of Oral Pathology and Oral Medicine, Faculty of Dentistry, Lagos State University College of Medicine, Ikeja, Lagos, Nigeria
| | - Adetayo Aborisade
- Department of Oral and Maxillofacial Surgery and Oral Pathology, Obafemi Awolowo University Teaching Hospital Complex, Ile-Ife, Nigeria
| | - Abiodun Saheed Olatunji
- Department of Oral and Maxillofacial Surgery and Oral Pathology, Obafemi Awolowo University Teaching Hospital Complex, Ile-Ife, Nigeria
| | - Adetokunbo Babajide Olawuyi
- Department of Oral and Maxillofacial Pathology and Biology, Lagos University Teaching Hospital, Lagos, Nigeria
| | - Adeola Mofoluwake Ladeji
- Department of Oral Pathology and Oral Medicine, Faculty of Dentistry, Lagos State University College of Medicine, Ikeja, Lagos, Nigeria
| | | | - Henry Ademola Adeola
- Department of Oral and Maxillofacial Pathology, Faculty of Dentistry, University of the Western Cape and Tygerberg Hospital, Cape Town, South Africa.,Division of Dermatology, Department of Medicine, Faculty of Health Sciences and Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
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Oh JS, You JS, Kim SG. Clinical and histomorphometric evaluation of decompression followed by enucleation in the treatment of odontogenic keratocyst. J Dent Sci 2018; 13:329-333. [PMID: 30895141 PMCID: PMC6388872 DOI: 10.1016/j.jds.2018.06.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 03/12/2018] [Indexed: 12/15/2022] Open
Abstract
Background/purpose The classification and treatment of odontogenic keratocyst (OKC) are controversial. The objective of this study was to present the efficiency of decompression followed by enucleation by clinical and histomorphometric evaluation for the treatment of OKC. Materials and methods Thirty four OKCs of 27 patients who underwent decompression followed by enucleation were included in this study. Clinical and histomorphometric analysis were performed. Results The average decreasing rate was 59% in maximum diameter, 66% in the amount of the volume for the average of period of the decompression was 9.8 months. The mean of increasing rate of the thickness of the epithelial lining was 921.16%. There were no recurrences for a mean follow-up period of 5.8 years. The thin and friable cyst wall of the OKC was changed to thickened, hard type. Conclusion The decompression was found to be effective and reliable as a treatment of the OKC to decrease the recurrence tendency, even for Gorlin-Goltz syndrome.
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Affiliation(s)
- Ji-Su Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University, Gwangju, Republic of Korea
| | - Jae-Seek You
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University, Gwangju, Republic of Korea
| | - Su-Gwan Kim
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Chosun University, Gwangju, Republic of Korea
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