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Ono S, Hirose K, Sukegawa S, Nakamura S, Motooka D, Iwamoto Y, Hori Y, Oya K, Fukuda Y, Toyosawa S. Multiple orthokeratinized odontogenic cysts: clinical, pathological, and genetic characteristics. Diagn Pathol 2022; 17:82. [PMID: 36242048 PMCID: PMC9569090 DOI: 10.1186/s13000-022-01261-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/24/2022] [Accepted: 10/04/2022] [Indexed: 11/10/2022] Open
Abstract
Background: Orthokeratinized odontogenic cyst (OOC) is a rare developmental odontogenic cyst of the jaw. It was originally believed to be a variant of odontogenic keratocyst (OKC) but is now considered to be a distinct entity. OOC usually presents as a single lesion and recurs infrequently. On the other hand, OKC often presents with multiple lesions and displays locally aggressive behavior and a high recurrence rate associated with the protein patched homolog 1 (PTCH1) gene mutation. Multiple OOC cases are extremely rare and seem to be aggressive, but their pathogenesis is not fully understood. This study aimed to determine the clinical, pathological, and genetic characteristics of multiple OCC. Methods: Three cases of multiple OOC were evaluated for clinical and histological findings, and immunohistochemical expression of Ki-67 and Bcl-2. Furthermore, PTCH1 mutations were analyzed by next-generation sequencing using a custom panel to cover the entire exon of PTCH1. Results: The three cases of multiple OOC included two men and one woman with a mean age of 25.3 years old (range, 18–38 years old). Each case had two or three OOCs (total of seven OOCs), all of which were simultaneously detected. Of the seven OOCs that manifested as multiple jaw cysts, seven (100%) occurred in the posterior regions, four (57.1%) occurred in the mandible, and four (57.1%) were associated with an impacted tooth. Histological examination revealed cysts lined by orthokeratinized stratified squamous epithelium. Immunohistochemistry showed a low Ki-67 labeling index and no Bcl-2 expression in the seven OOCs. No pathogenic PTCH1 mutations were detected in any of the seven OOCs. None of the patients had any other symptoms or signs of recurrence at the last follow-up (6–60 months). Conclusion: Multiple OOCs appeared to occur more often in younger patients than solitary OOC. Both multiple and solitary OOCs may be related diseases within the entity of odontogenic cysts. Multiple OOCs are clinicopathologically and genetically distinct from OKC.
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Affiliation(s)
- Sawako Ono
- Department of Pathology, Kagawa Prefectural Central Hospital, 1-2-1 Asahimachi, 760-8557, Takamatsu, Kagawa, Japan.,Department of Pathology and Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Katsutoshi Hirose
- Department of Oral Pathology, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, 565-0871, Suita, Osaka, Japan.
| | - Shintaro Sukegawa
- Department of Oral and Maxillofacial Surgery, Kagawa Prefectural Central Hospital, 1-2-1 Asahimachi, 760-8557, Takamatsu, Kagawa, Japan.,Department of Oral and Maxillofacial Surgery, Kagawa University School of Medicine, 1750-1 Ikenobe, 761-0793, Miki, Kagawa, Japan
| | - Satoko Nakamura
- Department of Pathology, Kagawa Prefectural Central Hospital, 1-2-1 Asahimachi, 760-8557, Takamatsu, Kagawa, Japan
| | - Daisuke Motooka
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, 565-0871, Suita, Osaka, Japan
| | - Yuri Iwamoto
- Department of Oral and Maxillofacial Radiology, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, 565-0871, Suita, Osaka, Japan
| | - Yumiko Hori
- Department of Pathology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, 565-0871, Suita, Osaka, Japan.,Department of Central Laboratory and Surgical Pathology, National Hospital Organization, Osaka National Hospital, 2-1-14 Hoenzaka, 540-0006, Osaka, Japan
| | - Kaori Oya
- Division for Clinical Laboratory, Osaka University Dental Hospital, 1-8 Yamadaoka, 565-0871, Suita, Osaka, Japan
| | - Yasuo Fukuda
- Division for Clinical Laboratory, Osaka University Dental Hospital, 1-8 Yamadaoka, 565-0871, Suita, Osaka, Japan
| | - Satoru Toyosawa
- Department of Oral Pathology, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, 565-0871, Suita, Osaka, Japan
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Wang YJ, Zhang JY, Dong Q, Li TJ. Orthokeratinized odontogenic cysts: A clinicopathologic study of 159 cases and molecular evidence for the absence of PTCH1 mutations. J Oral Pathol Med 2022; 51:659-665. [PMID: 35569117 DOI: 10.1111/jop.13305] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/23/2022] [Accepted: 04/15/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Orthokeratinized odontogenic cyst (OOC), a newly designated entity of odontogenic cysts, is an intraosseous jaw cyst that is entirely or predominantly lined by orthokeratinized squamous epithelium. The aim of this study was to report a large series of OOC to substantiate its clinicopathologic profiles and to investigate PTCH1 mutations in OOCs. METHOD The clinicopathologic features of 167 OOCs from 159 patients were analyzed and the immunohistochemical expression of markers related to cell differentiation and proliferation was evaluated. Furthermore, PTCH1 mutations were analyzed in 14 fresh samples of OOC. RESULTS OOCs occurred mostly in the third and fourth decades (60.4%) with a male predilection (66.7%). The lesions developed more often in the mandible than maxilla, primarily in the posterior mandible and ramus. Eight patients (5.0%) showed multiple locations of either bilateral posterior mandible (n = 6) or both the maxilla and mandible. Radiographically, the majority of OOCs (91.2%) showed a well-demarcated, unilocular radiolucency with 14 multilocular cases (8.8%). A follow-up of 131 patients (123 treated by enucleation with or without marsupialization and eight by peripheral ostectomy) revealed no recurrence during an average period of 4.56 years after surgery. Immunohistochemistry indicated lower proliferative activity and a varying epithelial differentiation pattern in OOC compared with odontogenic keratocysts (OKC). No PTCH1 mutation was detected, except for three known single nucleotide polymorphisms. CONCLUSION The clinicopathological and molecular differences between OOC and OKC justified their separation, and unlike OKCs, OOCs did not harbor PTCH1 mutations, suggesting different pathogenesis underlying these two jaw cysts.
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Affiliation(s)
- Yan-Jin Wang
- Department of Oral Pathology, Peking University School and Hospital of Stomatology, Beijing, PR China
| | - Jian-Yun Zhang
- Department of Oral Pathology, Peking University School and Hospital of Stomatology, Beijing, PR China.,Research Unit of Precision Pathologic Diagnosis in Tumors of the Oral and Maxillofacial Regions, Chinese Academy of Medical Sciences (2019RU034), Beijing, PR China
| | - Qing Dong
- School of Stomatology, North China University of Science and Technology, Qinhuangdao, PR China
| | - Tie-Jun Li
- Department of Oral Pathology, Peking University School and Hospital of Stomatology, Beijing, PR China.,Research Unit of Precision Pathologic Diagnosis in Tumors of the Oral and Maxillofacial Regions, Chinese Academy of Medical Sciences (2019RU034), Beijing, PR China
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Mahdavi N, Zavarei M, Derakhshan S, Nasab MH. Orthokeratinized odontogenic cyst: Report of eight cases and review of literature regarding its malignant transformation. J Oral Maxillofac Pathol 2021; 25:S11-S17. [PMID: 34083963 PMCID: PMC8123257 DOI: 10.4103/jomfp.jomfp_1_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 07/28/2020] [Accepted: 08/11/2020] [Indexed: 11/13/2022] Open
Abstract
Orthokeratinized odontogenic cyst (OOC) is an uncommon odontogenic cyst. It has been categorized as a subtype of odontogenic keratocyst (OKC). In 2005, it was classified as a distinct entity. OOC should be histopathologically differentiated from OKC, which has a higher recurrence rate and lower malignant potential. In addition, OOC should be examined for malignant transformation. The epithelium of odontogenic cysts may rarely show malignant transformation. However, malignant transformation has been reported in inflammatory cysts such as the residual cyst and periapical cyst. The number of carcinomas arising from an OOC is low. This paper describes eight cases of OOC; out of which, two showed the development of squamous cell carcinoma from their epithelial lining.
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Affiliation(s)
- Nazanin Mahdavi
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Tehran University of Medical Sciences, Kashan, Iran
| | - Mona Zavarei
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Kashan University of Medical Sciences, Kashan, Iran
| | - Samira Derakhshan
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Tehran University of Medical Sciences, Kashan, Iran
| | - Mahboube Hashemi Nasab
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Tehran University of Medical Sciences, Kashan, Iran
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Tenório JR, Santana T, Queiroz SIML, de Oliveira DHIP, Queiroz LMG. Apoptosis and cell cycle aberrations in epithelial odontogenic lesions: An evidence by the expression of p53, Bcl-2 and Bax. Med Oral Patol Oral Cir Bucal 2018; 23:e120-e125. [PMID: 29476674 PMCID: PMC5911354 DOI: 10.4317/medoral.22019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 12/23/2017] [Indexed: 01/27/2023] Open
Abstract
Background Ameloblastoma (AMB), odontogenic keratocyst (OKC) and adenomatoid odontogenic tumor (AOT) are epithelial odontogenic lesions with diverse biologic profiles. Defects in regulation of apoptosis and cell cycle may be involved in the development and progression of those lesions, therefore we aimed to investigate the expression of Bcl-2, Bax and p53 to better understand the possible role of these proteins in AMBs, OKCs and AOTs. Material and Methods The studied sample consisted of 20 AMBs, 20 OKCs and 20 AOTs. Immunohistochemistry technique was performed for the antibodies p53, Bcl-2 and Bax. Immunoreactivity was observed in the epithelial component and positive cells were counted in five fields (100x magnification). Statistical analysis was performed with Kruskal-Wallis and Spearman tests (p<0.05). Results All lesions exhibited staining for the three studied proteins. There was no statistically significant associations between the expression of proteins and the lesions, however we identified a positive correlation between the expression of p53 and Bcl-2 (r = 0.200) and a negative correlation between p53 and Bax expressions (r = -0.100). In addition, p53 and Bax were similarly expressed between AMBs and OKCs. Bcl-2 was similarly expressed in AMBs and AOTs. Conclusions Apoptosis regulatory proteins, as well as cell cycle proteins, are differently expressed in epithelial odontogenic lesions and their expression is possibly related to the biological behavior of AMB, OKC and AOT. Key words:Odontogenic tumors, apoptosis, apoptosis regulatory proteins, p53 tumor suppressor protein, immunohistochemistry.
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Affiliation(s)
- J-R Tenório
- Departamento de Odontologia, Universidade Federal do Rio Grande do Norte, Av. Senador Salgado Filho, 1787, Lagoa Nova, CEP 59056-000 Natal, RN, Brasil,
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Dandena VK, Thimmaiah SY, Kiresur MA, Hunsigi P, Roy S, Rashmi M. A comparative study of odontogenic keratocyst and orthokeratinized odontogenic cyst using Ki67 and α smooth muscle actin. J Oral Maxillofac Pathol 2017; 21:458-459. [PMID: 29391732 PMCID: PMC5763880 DOI: 10.4103/jomfp.jomfp_71_17] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Aim This study aimed to demonstrate and evaluate the expression of stromal myofibroblasts (MFs) and epithelial cell proliferation using α-smooth muscle actin (α-SMA) and Ki67 markers, respectively, in odontogenic keratocyst (OKC) and orthokeratinized odontogenic cyst (OOC) to correlate their aggressive behavior. Materials and Methods Twenty cases of OKC and twenty cases of OOC were stained with α-SMA and Ki67 markers for demonstration of stromal MFs and epithelial cell proliferation, respectively, and ten cases of well-differentiated squamous cell carcinoma were used as positive control. Assessment of the number of α-SMA-positive stromal cells and Ki67-positive epithelial cells determined by MFs and proliferative epithelial cell frequency in 10 high-power fields (×400) was presented as the mean number of positive cells per field. Statistical Analysis Kruskal-Wallis and Mann-Whitney test were used to analyze the difference in the mean number of α-SMA- and Ki67-positive cells per field between OKC and OOC. Results The mean number of positively stained cells for α-SMA and Ki67 is significantly higher in OKC compared to OOC. Conclusion Impression is that, the different behaviors of these two entities are compatible with their immunohistochemical view. The high value of stromal MFs and proliferative epithelial cells in OKC in comparison to OOC indicates its aggressiveness and potential for recurrence.
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Affiliation(s)
- Vinay Kumar Dandena
- Department of Oral Pathology and Microbiology, AME's Dental College, Raichur, India
| | | | - Mohammad Asif Kiresur
- Department of Oral Pathology and Microbiology, St. Joseph's Dental College, Eluru, Andhra Pradesh, India
| | - Prahlad Hunsigi
- Department of Oral Pathology and Microbiology, AME's Dental College, Raichur, India
| | - Swathi Roy
- Department of Oral Pathology and Microbiology, Yamuna Institute of Dental Sciences and Research, Yamunanagar, Haryana, India
| | - M Rashmi
- Department of Public Health Dentistry, KGF College of Dental Sciences, Kolar, Karnataka, India
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Gurgel CAS, Buim MEC, Carvalho KC, Sales CBS, Reis MG, de Souza RO, de Faro Valverde L, de Azevedo RA, Dos Santos JN, Soares FA, Ramos EAG. Transcriptional profiles of SHH pathway genes in keratocystic odontogenic tumor and ameloblastoma. J Oral Pathol Med 2014; 43:619-26. [PMID: 24930892 DOI: 10.1111/jop.12180] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2014] [Indexed: 12/23/2022]
Abstract
BACKGROUND Sonic hedgehog (SHH) pathway activation has been identified as a key factor in the development of many types of tumors, including odontogenic tumors. Our study examined the expression of genes in the SHH pathway to characterize their roles in the pathogenesis of keratocystic odontogenic tumors (KOT) and ameloblastomas (AB). METHODS We quantified the expression of SHH, SMO, PTCH1, SUFU, GLI1, CCND1, and BCL2 genes by qPCR in a total of 23 KOT, 11 AB, and three non-neoplastic oral mucosa (NNM). We also measured the expression of proteins related to this pathway (CCND1 and BCL2) by immunohistochemistry. RESULTS We observed overexpression of SMO, PTCH1, GLI1, and CCND1 genes in both KOT (23/23) and AB (11/11). However, we did not detect expression of the SHH gene in 21/23 KOT and 10/11 AB tumors. Low levels of the SUFU gene were expressed in KOT (P = 0.0199) and AB (P = 0.0127) relative to the NNM. Recurrent KOT exhibited high levels of SMO (P = 0.035), PTCH1 (P = 0.048), CCND1 (P = 0.048), and BCL2 (P = 0.045) transcripts. Using immunolabeling of CCND1, we observed no statistical difference between primary and recurrent KOT (P = 0.8815), sporadic and NBCCS-KOT (P = 0.7688), and unicystic and solid AB (P = 0.7521). CONCLUSIONS Overexpression of upstream (PTCH1 and SMO) and downstream (GLI1, CCND1 and BCL2) genes in the SHH pathway leads to the constitutive activation of this pathway in KOT and AB and may suggest a mechanism for the development of these types of tumors.
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Cheng YSL, Liang H, Wright J, Teenier T. Multiple orthokeratinized odontogenic cysts: a case report. Head Neck Pathol 2014; 9:153-7. [PMID: 24737103 PMCID: PMC4382487 DOI: 10.1007/s12105-014-0545-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Accepted: 04/05/2014] [Indexed: 02/07/2023]
Abstract
The purpose of this report is to document the clinical, radiographic, pathological and molecular findings of the first case of multiple orthokeratinized odontogenic cysts (OOCs). Multiple odontogenic keratocysts are one of the major features of nevoid basal cell carcinoma syndrome (NBCCS), and loss of heterozygosity in the PTCH gene, the culprit gene for NBCCS, has recently been found in sporadic OOC cases. Therefore, in this presenting case, we also investigated the possibility that this patient might also have NBCCS, by comparing the available clinical information and the molecular findings of this case to the diagnostic criteria for NBCCS (as proposed by the First International Colloquium on NBCCS in 2011). However, this patient with multiple OOCs showed no evidence of having NBCCS. This conclusion supports the findings from previous case series based on sporadic cases that OOC does not appear to be associated with NBCCS.
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Affiliation(s)
- Yi-Shing Lisa Cheng
- />Diagnostic Sciences, Texas A&M University-Baylor College of Dentistry, 3302 Gaston Ave, Dallas, TX 75246 USA
| | - Hui Liang
- />Diagnostic Sciences, Texas A&M University-Baylor College of Dentistry, 3302 Gaston Ave, Dallas, TX 75246 USA
| | - John Wright
- />Diagnostic Sciences, Texas A&M University-Baylor College of Dentistry, 3302 Gaston Ave, Dallas, TX 75246 USA
| | - Tom Teenier
- />Oral and Maxillofacial Surgery Private Practice, 5402 Holly Road, Suite 302, Building 3, Corpus Christi, TX 78411 USA
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Roy S, Garg V. Evaluation of stromal myofibroblasts expression in keratocystic odontogenic tumor and orthokeratinized odontogenic cysts: A comparative study. J Oral Maxillofac Pathol 2013; 17:207-11. [PMID: 24250080 PMCID: PMC3830228 DOI: 10.4103/0973-029x.119789] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objective: Keratocystic odontogenic tumor (KCOT) has an aggressive clinical course and a high tendency of recurrence, while orthokeratinized odontogenic cyst (OOC) has different characteristics and does not show aggressive behaviour. Even the treatment of these two lesions varies considerably. A large number of epithelial molecules have been studied in order to differentiate odontogenic keratocyst (OKC) from OOC, but stromal factors have not been adequately studied. Recently, tumor stroma has evolved as a particular field of interest. In the present study, we aim to evaluate and compare the expression of stromal myofibroblasts (MFs) in these entities and correlate it to its aggressive behavior. The term ‘keratocystic odontogenic tumor’ has been introduced by WHO in 2005 for odontogenic keratocyst keeping in mind its aggressive behavior, however still many pathologists and clinicians use the term OKC synonymously. Materials and Methods: A total of 10 cases of KCOT and 10 cases of OOC were stained for alpha-smooth muscle actin (αSMA) for demonstration of stromal MFs. MF frequency was assessed as the number of αSMA-positive stromal cells in 10 high power fields, presented as the mean number of positive cells per field. Results: Counts showed that the mean number of positive cells in KCOT (20.6 ± 2.05) was significantly higher than that seen in OOC (10.4 ± 1.06) (P < 0.05). Conclusion: The different behaviors of these lesions are compatible with the finding of the present study. The increased number of stromal MFs in KCOT in comparison to OOC correlates with its aggressive behavior and increased tendency towards recurrence.
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Affiliation(s)
- Swati Roy
- Department of Oral and Maxillofacial Pathology, Himachal Institute of Dental Sciences, Paonta Sahib, Himachal Pradesh, India
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Kakimoto N, Chindasombatjaroen J, Tomita S, Shimamoto H, Uchiyama Y, Hasegawa Y, Kishino M, Murakami S, Furukawa S. Contrast-enhanced multidetector computerized tomography for odontogenic cysts and cystic-appearing tumors of the jaws: is it useful? Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 115:104-13. [PMID: 23217541 DOI: 10.1016/j.oooo.2012.09.082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Revised: 09/18/2012] [Accepted: 09/28/2012] [Indexed: 12/22/2022]
Abstract
OBJECTIVE The purpose of this study was to investigate the usefulness of computerized tomography (CT), particularly contrast-enhanced CT, in differentiation of jaw cysts and cystic-appearing tumors. STUDY DESIGN We retrospectively analyzed contrast-enhanced CT images of 90 patients with odontogenic jaw cysts or cystic-appearing tumors. The lesion size and CT values were measured and the short axis to long axis (S/L) ratio, contrast enhancement (CE) ratio, and standard deviation ratio were calculated. RESULTS The lesion size and the S/L ratio of keratocystic odontogenic tumors were significantly different from those of radicular cysts and follicular cysts. There were no significant differences in the CE ratio among the lesions. CONCLUSIONS Multidetector CT provided diagnostic information about the size of odontogenic cysts and cystic-appearing tumors of the jaws that was related to the lesion type, but showed no relation between CE ratio and the type of these lesions.
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Affiliation(s)
- Naoya Kakimoto
- Department of Oral and Maxillofacial Radiology, Osaka University Graduate School of Dentistry, Osaka, Japan.
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Finkelstein MW, Hellstein JW, Lake KS, Vincent SD. Keratocystic odontogenic tumor: a retrospective analysis of genetic, immunohistochemical and therapeutic features. Proposal of a multicenter clinical survey tool. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 116:75-83. [PMID: 23672830 DOI: 10.1016/j.oooo.2013.03.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 03/18/2013] [Accepted: 03/21/2013] [Indexed: 01/17/2023]
Abstract
OBJECTIVE In 2005, the World Health Organization reclassified the parakeratinizing odontogenic keratocyst as a neoplasm. This article reviews the research leading to this reclassification, and validates a new survey tool that can be easily used to pool surgical and recurrence data from multiple offices. STUDY DESIGN All odontogenic lesions accessioned in the Iowa Surgical Oral Pathology Laboratory between 1949 and 2010 were identified from the database. A survey tool to assess treatment and follow-up was created. A total of 46 surgeons agreed to participate. RESULTS A total of 70 keratocystic odontogenic tumors (KOTs) had documented recurrences at follow-up intervals ranging from 6 months to 5 years. Primary tumors that recurred ranged in size as measured by greatest radiographic diameter from 0.7 to 6 cm. CONCLUSIONS This survey tool is recommended as standard allowing treatment of cases by multiple practitioners to be compared retrospectively or prospectively.
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Kolokythas A, Karas M, Sarna T, Flick W, Miloro M. Does Cytokine Profiling of Aspirate From Jaw Cysts and Tumors Have a Role in Diagnosis? J Oral Maxillofac Surg 2012; 70:1070-80. [DOI: 10.1016/j.joms.2011.04.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2011] [Revised: 04/08/2011] [Accepted: 04/11/2011] [Indexed: 01/05/2023]
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Diniz MG, Galvão CF, Macedo PS, Gomes CC, Gomez RS. Evidence of loss of heterozygosity of the PTCH gene in orthokeratinized odontogenic cyst. J Oral Pathol Med 2010; 40:277-80. [PMID: 21138481 DOI: 10.1111/j.1600-0714.2010.00977.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The orthokeratinized odontogenic cyst (OOC) is an odontogenic cyst of unknown etiology. Clinical, histological, and biological differences are reported between keratocystic odontogenic tumor (KOT) and OOC. PTCH is a tumor suppressor gene related to sonic hedgehog (SHH) pathway important in embryological development. Considering that alterations in this pathway have been described in sporadic and nevoid basal cell syndrome-associated KOT, we tested the hypothesis that OOC is also associated with loss of heterozygosity (LOH) of the PTCH gene. Seven samples of OOC and seven of KOT were included in the study. D9S287, D9S196, and D9S127 microsatellite markers located in the region of PTCH gene, at chromosome 9q, were investigated for LOH. There was loss in at least one locus in 5/7 KOT and in 4/7 OOC samples. The present finding demonstrates that, despite the existence of clinical, morphological, immunohistochemical, and biological behavior differences between OOC and KOT, both harbor similar genetic alterations at 9q.
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Affiliation(s)
- Marina Gonçalves Diniz
- Department of Oral Surgery and Pathology, Universidade Federal de Minas Gerais, Belo Horizonte-MG, Minas Gerais, CEP, Brazil
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Johann ACBR, Caldeira PC, Caliari MV, de Abreu MHNG, Aguiar MCF, Mesquita RA. Metallothionein in the radicular, dentigerous, orthokeratinized odontogenic cysts and in keratocystic odontogenic tumor. J Oral Pathol Med 2010; 40:270-6. [DOI: 10.1111/j.1600-0714.2010.00971.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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