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Evangelou Z, Zarachi A, Dumollard JM, Peoc'h M, Komnos I, Kastanioudakis I, Karpathiou G. Maxillary Ameloblastoma: A Review With Clinical, Histological and Prognostic Data of a Rare Tumor. In Vivo 2020; 34:2249-2258. [PMID: 32871747 PMCID: PMC7652510 DOI: 10.21873/invivo.12035] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/07/2020] [Accepted: 07/09/2020] [Indexed: 01/05/2023]
Abstract
Diagnosis of odontogenic tumors can be challenging due to their rarity and diverse morphology, but when arising near the tooth, the diagnosis could be suspected. When their location is not typical, like inside the paranasal sinuses, the diagnosis is less easy. Maxillary ameloblastomas are exceedingly rare with only sparse information on their epidemiological, histological and genetic characteristics. The aim of this report is to thoroughly review the available literature in order to present the characteristics of this tumor. According to available data, maxillary ameloblastomas can occur in all ages but later than mandible ones, and everywhere within the maxillary region without necessarily having direct contact with the teeth. No sex preference has been shown. The most common histological patterns seen in this location are the follicular and plexiform ones. Maxillary ameloblastomas are locally aggressive neoplasms, thus therapy aims for excision including normal bone beyond the lesion. In contrast to mandible ameloblastomas, maxillary ones most commonly show mutations of the SMO gene. Furthermore, differential tumor diagnosis is thoroughly discussed in the present review.
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Affiliation(s)
- Zoi Evangelou
- Department of Pathology and Otorhinolaryngology, University Hospital of Ioannina, Ioannina, Greece
| | - Athina Zarachi
- Department of Head and Neck Surgery, University Hospital of Ioannina, Ioannina, Greece
| | - Jean Marc Dumollard
- Department of Pathology, University Hospital of Saint-Etienne, Saint-Etienne, France
| | - Michel Peoc'h
- Department of Pathology, University Hospital of Saint-Etienne, Saint-Etienne, France
| | - Ioannis Komnos
- Department of Head and Neck Surgery, University Hospital of Ioannina, Ioannina, Greece
| | | | - Georgia Karpathiou
- Department of Pathology and Otorhinolaryngology, University Hospital of Ioannina, Ioannina, Greece
- Department of Pathology, University Hospital of Saint-Etienne, Saint-Etienne, France
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2
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Li Y, Bae HI, Kim HS, Kang MS, Gong BH, Jung WH, Lee S, Bae JS, Kim KH, Song SW, Lee JH, Kang BH. Spontaneous Peripheral Ameloblastic Odontoma in a Male Sprague-Dawley Rat. Toxicol Res 2017; 33:141-147. [PMID: 28503263 PMCID: PMC5426507 DOI: 10.5487/tr.2017.33.2.141] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 02/02/2017] [Accepted: 02/21/2017] [Indexed: 11/20/2022] Open
Abstract
Peripheral ameloblastic odontoma is a rare variant of odontogenic tumor occurring in the extraosseous region. The present report describes a spontaneous tumor in male Sprague-Dawley (SD) rats. The clinically confirmed nodule in the right mandibular region was first observed when the rat was 42 weeks and remained until the terminal sacrifice date when the animal was 48 weeks of age. At necropsy, a well demarcated nodule, approximately 2.5 × 2.0 × 2.0 cm, protruded from the ventral area of the right mandible. The nodule was not attached to mandibular bone and was not continuous with the normal teeth. Histopathologically, the tumor was characterized by the simultaneous occurrence of an ameloblastomatous component and composite odontoma-like elements within the same tumor. The epithelial portion formed islands or cords resembling the follicle or plexiform pattern typical of ameloblastoma and was surrounded by mesenchymal tissue. Formation of eosinophilic and basophilic hard tissue matrix (dentin and enamel) resembling odontoma was observed in the center of the tumor. Mitotic figures were rare, and areas of cystic degeneration were present. Immunohistochemically, the epithelial component was positive for cytokeratin AE1/AE3 (CK AE1/AE3), and the mesenchymal component and odontoblast-like cells were positive for vimentin, in the same manner as in normal teeth. On the basis of these findings, the tumor was diagnosed as a peripheral ameloblastic odontoma in an extraosseous mandibular region in a SD rat. In the present study, we report the uncommon spontaneous peripheral ameloblastic odontoma in the SD rat. We also discuss here the morphological characteristics, origin, histochemical, and immunohistochemical features for the diagnosis of this tumor.
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Affiliation(s)
- Yinghua Li
- Department of Pathology, Chemon Inc., Yongin, Korea
| | - Han-Ik Bae
- Department of Pathology, Kyungpook National University Medical Center, Daegu, Korea
| | - Hak-Soo Kim
- Department of Pathology, Chemon Inc., Yongin, Korea
| | - Min-Soo Kang
- Department of Pathology, Chemon Inc., Yongin, Korea
| | - Bo-Ho Gong
- Department of Pathology, Chemon Inc., Yongin, Korea
| | - Won-Hee Jung
- Department of Pathology, Chemon Inc., Yongin, Korea
| | - Sranna Lee
- Department of Pathology, Chemon Inc., Yongin, Korea
| | - Jin-Sook Bae
- Department of Pathology, Chemon Inc., Yongin, Korea
| | - Kap-Ho Kim
- Department of Pathology, Chemon Inc., Yongin, Korea
| | - Si-Whan Song
- Department of Pathology, Chemon Inc., Yongin, Korea
| | - Jae-Hyun Lee
- Department of Pathology, Chemon Inc., Yongin, Korea
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Lascane NADS, Sedassari BT, Alves FDA, Gallottini MHC, de Sousa SCOM. Peripheral ameloblastoma with dystrophic calcification: an unusual feature in non-calcifying odontogenic tumors. Braz Dent J 2016; 25:253-6. [PMID: 25252263 DOI: 10.1590/0103-6440201300024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 06/09/2014] [Indexed: 11/22/2022] Open
Abstract
Peripheral ameloblastoma is a rare extraosseous counterpart of central ameloblastoma that occurs in soft tissues and may cause bone crest resorption. This study reports a peripheral ameloblastoma on the buccal gingiva of a 56-year-old man, which presented extensive squamous metaplasia areas, keratinization and dystrophic calcifications in the neoplastic islands. It is emphasized the need of a detailed imaging study and a long follow-up period to exclude bone involvement whenever peripheral ameloblastoma diagnosis is considered.
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Affiliation(s)
| | | | - Fábio de Abreu Alves
- Department of Oral Diagnosis, Dental School, University of São Paulo, São Paulo, SP, Brazil
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4
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Chhina S, Rathore AS. Peripheral ameloblastoma of gingiva with cytokeratin 19 analysis. BMJ Case Rep 2015; 2015:bcr-2015-210227. [PMID: 26045522 DOI: 10.1136/bcr-2015-210227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
A 42-year-old woman presented with a gingival mass in the lingual vestibule of the mandibular incisor premolar region. On intraoral examination, the swelling was non-tender and firm. Surgical excision was carried out and subsequent histopathological examination revealed areas resembling ameloblastoma-like and basaloid areas with atypical features suggestive of basal cell carcinoma. Immunohistochemical analysis was carried out to ascertain the origin of the lesion.
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Affiliation(s)
- Shivjot Chhina
- Department of Periodontics, ITS Dental College, Hospital & Research Centre, Greater Noida, Uttar Pradesh, India
| | - Ajit Singh Rathore
- Department of Oral Pathology, ITS Dental College, Ghaziabad, Uttar Pradesh, India
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Hunter KD, Speight PM. The diagnostic usefulness of immunohistochemistry for odontogenic lesions. Head Neck Pathol 2014; 8:392-9. [PMID: 25409846 PMCID: PMC4245415 DOI: 10.1007/s12105-014-0582-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 10/30/2014] [Indexed: 10/24/2022]
Abstract
The diagnosis of odontogenic tumors can be challenging, largely due to their rarity and consequent difficulties in gaining experience in their assessment. In most cases, careful attention to morphology, in conjunction with clinical and radiological features will allow a diagnosis to be made. However, in some cases, immunohistochemical analysis of the tumor may be useful. In this review we will outline the immunohistochemical expression profile of normal developing odontogenic tissues and a range of odontogenic tumors. In many cases the immunohistochemical markers are neither specific nor sensitive enough to be of help in diagnosis, but in some cases such analysis may prove very useful. Thus we have outlined a limited number of circumstances where immunohistochemistry may be of use to the practicing diagnostic pathologist.
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Affiliation(s)
- Keith D. Hunter
- grid.11835.3e0000000419369262Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Claremont Crescent, Sheffield, S10 2TA UK
| | - Paul M. Speight
- grid.11835.3e0000000419369262Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Claremont Crescent, Sheffield, S10 2TA UK
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Bertossi D, Favero V, Albanese M, De-Santis D, Martano M, Padovano-di-Leva A, De-Florio I, Nocini PF, Lo-Muzio L. Peripheral ameloblastoma of the upper gingiva: Report of a case and literature review. J Clin Exp Dent 2014; 6:e180-4. [PMID: 24790720 PMCID: PMC4002350 DOI: 10.4317/jced.51124] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Accepted: 12/14/2013] [Indexed: 11/30/2022] Open
Abstract
According to the 2005 histological classification of odontogenic neoplasms by the World Health Organization, ameloblastoma is a benign, locally invasive epithelial odontogenic tumor of putative enamel organ origin. There are four distinct subgroups in which this neoplasm can be gathered: the solid/multicystic type, the unicystic type, the desmoplastic and the peripheral type. Peripheral ameloblastoma is believed to be the rarest subgroup, making up for 2 to 10% of all ameloblastomas. From its first description by Kuru in 1911 to date, less than 200 cases of PA have been described in literature. PAs commonly affect the mandible, in the maxilla the most common location is the soft palatal tissue of the tuberosity area. The present report discusses a rare case of PA aroused in the gingiva of upper jaw in a 64-year-old woman. The treatment of the lesion and its immunohistochemical phenotype are described. A review of the literature is also performed, focusing on the epidemiological and pathological aspects of the lesions and their implications on the therapy.
Key words:Peripheral ameloblastoma, upper gingiva, ameloblastoma.
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Affiliation(s)
- Dario Bertossi
- Unit of Dentistry and Maxillo-Facial Surgery, University of Verona, Italy
| | - Vittorio Favero
- Unit of Dentistry and Maxillo-Facial Surgery, University of Verona, Italy
| | - Massimo Albanese
- Unit of Dentistry and Maxillo-Facial Surgery, University of Verona, Italy
| | - Daniele De-Santis
- Unit of Dentistry and Maxillo-Facial Surgery, University of Verona, Italy
| | - Manuela Martano
- Department of Veterinary Medicine and Animal Productions, University of Naples, Italy
| | | | - Iride De-Florio
- Department of Medicina clinica, sanita pubblica, scienze della vita e dell`ambiente, University of L`Aquila, L`Aquila, Italy
| | - Pier F Nocini
- Unit of Dentistry and Maxillo-Facial Surgery, University of Verona, Italy
| | - Lorenzo Lo-Muzio
- Department of Clinical and Experimental Medicine, University of Foggia, Italy
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Okuda Y, Nakano K, Suzuki K, Sugita Y, Kubo K, Maeda H, Okafuji N, Hasegawa H, Kawakami T. Wnt signaling as a possible promoting factor of cell differentiation in pleomorphic adenomas. Int J Med Sci 2014; 11:971-8. [PMID: 25076852 PMCID: PMC4113590 DOI: 10.7150/ijms.9453] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Accepted: 06/25/2014] [Indexed: 01/29/2023] Open
Abstract
There are well known that Wnt signaling was some roles of cell differentiation at the development tissues, especially the oral and maxillofacial regions of some developmental stages. Therefore, to determine Wnt signaling in the pleomorphic adenoma tissues, we examined. The expression of Wnt1 and β-catenin as well as the distribution of various cytoskeletal proteins CK7 and CK13 was examined in 30 cases of pleomorphic adenoma by immunohistochemistry. Wnt1 was detected in almost all tumor cells. The peripheral columnar cells in squamous metaplasia and small cuboidal cells in duct-like structures were strongly positive to Wnt1. Although β-catenin was clearly localized on the cell membrane of tumor cells, nuclear translocation was observed in small cuboidal cells and in some basaloid cells. The immunofluorescent staining pattern of Wnt1 and CK7 as well as Wnt1 and CK13 was consistent with IHC results. Thus, in pleomorphic adenoma, Wnt is involved in tumor cell differentiation of peripheral columnar cells forming solid nests and small peripheral columnar cells forming duct-like structures. Moreover, among the three currently known Wnt pathways, β-catenin is the suggested pathway working during cell differentiation. Furthermore, peripheral columnar cells in solid tumor nests and in squamous metaplasia are governed by another Wnt pathway other than β-catenin. Therefore, Wnt signaling through β-catenin pathway may be involved in the 'mixed' differentiation characteristic of pleomorphic adenoma although another pathway may also be possibly working in other parts of the tumor tissue.
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Affiliation(s)
- Yukiko Okuda
- 1. Hard Tissue Pathology Unit, Matsumoto Dental University Graduate School of Oral Medicine, Shiojiri, Japan ; 3. Department of Oral and Maxillofacial Surgery, Hyogo Prefectural Tsukaguchi Hospital, Amagasaki, Japan
| | - Keisuke Nakano
- 1. Hard Tissue Pathology Unit, Matsumoto Dental University Graduate School of Oral Medicine, Shiojiri, Japan ; 4. Department of Oral Pathology, Matsumoto Dental University School of Dentistry, Shiojiri, Japan
| | - Koji Suzuki
- 2. Department of Oral Pathology, School of Dentistry, Aichi Gakuin University, Nagoya, Japan
| | - Yoshihiko Sugita
- 2. Department of Oral Pathology, School of Dentistry, Aichi Gakuin University, Nagoya, Japan ; 5. Center for Advanced Oral Science, Aichi Gakuin University, Nagoya, Japan
| | - Katsutoshi Kubo
- 2. Department of Oral Pathology, School of Dentistry, Aichi Gakuin University, Nagoya, Japan ; 5. Center for Advanced Oral Science, Aichi Gakuin University, Nagoya, Japan
| | - Hatsuhiko Maeda
- 2. Department of Oral Pathology, School of Dentistry, Aichi Gakuin University, Nagoya, Japan ; 5. Center for Advanced Oral Science, Aichi Gakuin University, Nagoya, Japan
| | - Norimasa Okafuji
- 6. Clinical Evaluation Unit, Matsumoto Dental University Graduate School of Oral Medicine, Shiojiri, Japan
| | - Hiromasa Hasegawa
- 1. Hard Tissue Pathology Unit, Matsumoto Dental University Graduate School of Oral Medicine, Shiojiri, Japan ; 4. Department of Oral Pathology, Matsumoto Dental University School of Dentistry, Shiojiri, Japan
| | - Toshiyuki Kawakami
- 1. Hard Tissue Pathology Unit, Matsumoto Dental University Graduate School of Oral Medicine, Shiojiri, Japan
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Fujita M, Nakano K, Funato A, Sugita Y, Kubo T, Maeda H, Okafuji N, Hasegawa H, Kawakami T. Heat shock protein27 expression and cell differentiation in ameloblastomas. Int J Med Sci 2013; 10:1271-7. [PMID: 23983585 PMCID: PMC3753412 DOI: 10.7150/ijms.6597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Accepted: 07/18/2013] [Indexed: 11/05/2022] Open
Abstract
The expression of HSP27 and some CKs were examined the 40 cases of typical solid/multicystic ameloblastoma using immunohistochemical techniques. In order to examine the relevance of HSP in cell differentiation, we focused on the cytoskeletal expression of CK. CK19 is a marker of typical odontogenic epithelium widely observed in follicular and plexiform types of ameloblastomas. Since staining with CK14 is one of the measures of the differentiation potential of squamous cells and is extensively expressed in both follicular and plexiform types, it implies that squamous differentiation of each type can occur. CK8 was strongly detected in tumor nests in plexiform type but weakly detected in follicular type. It was considered that the expression of HSP27 in plexiform type correlated with the expression of CK8 suggesting that HSP27 might have regulated the expression of CK8.
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Affiliation(s)
- Muneteru Fujita
- Hard Tissue Pathology Unit, Matsumoto Dental University Graduate School of Oral Medicine, Shiojiri, Japan
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Hatai H, Iba M, Kojima D, Park CH, Tsuchida Y, Oyamada T. Spindle cell ameloblastic carcinoma in a labrador retriever dog. J Vet Med Sci 2012; 75:639-41. [PMID: 23229541 DOI: 10.1292/jvms.12-0446] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 13-year-old castrated male Labrador retriever dog presented with a mass caudal to the first molar of his left mandible. Although the tumor was excised, a recurrent tumor was detected one month later and resected. Both tumors displayed invasive growth and were composed of neoplastic proliferation arranged in irregular lobules, nests and cords continuous with mucosal epithelium. The most prominent feature of the tumors was the presence of many proliferating spindle cells admixed with palisading basal-like cells, acanthocytes and stellate cells. In immunohistochemical examinations, the spindle cells were found to be positive for vimentin; cytokeratin AE1/AE3, 5/6, 14 and 19; and p63. The other neoplastic cells were positive for all of these markers shown above except vimentin. Based on these findings, the tumors were diagnosed as spindle cell ameloblastic carcinoma.
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Affiliation(s)
- Hitoshi Hatai
- Laboratory of Veterinary Pathology, School of Veterinary Medicine, Kitasato University, Higashi 23-35-1, Towada, Aomori 034-8628, Japan.
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Fulton A, Arzi B, Murphy B, Naydan DK, Verstraete FJM. The expression of calretinin and cytokeratins in canine acanthomatous ameloblastoma and oral squamous cell carcinoma. Vet Comp Oncol 2012; 12:258-65. [DOI: 10.1111/j.1476-5829.2012.00356.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 07/31/2012] [Accepted: 08/13/2012] [Indexed: 12/01/2022]
Affiliation(s)
- A. Fulton
- William R. Pritchard Veterinary Medical Teaching Hospital, School of Veterinary Medicine; University of California; Davis CA USA
| | - B. Arzi
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine; University of California; Davis CA USA
| | - B. Murphy
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine; University of California; Davis CA USA
| | - D. K. Naydan
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine; University of California; Davis CA USA
| | - F. J. M. Verstraete
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine; University of California; Davis CA USA
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Woo SB. Fibrous, Gingival, Lipocytic, and Miscellaneous Tumors. ORAL PATHOLOGY 2012:63-105. [DOI: 10.1016/b978-1-4377-2226-0.00005-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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12
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Expression of Cytokeratins in the Epithelium of Canine Odontogenic Tumours. J Comp Pathol 2011; 145:345-51. [DOI: 10.1016/j.jcpa.2011.03.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 01/27/2011] [Accepted: 03/02/2011] [Indexed: 01/02/2023]
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13
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Yoon HJ, Jo BC, Shin WJ, Cho YA, Lee JI, Hong SP, Hong SD. Comparative immunohistochemical study of ameloblastoma and ameloblastic carcinoma. ACTA ACUST UNITED AC 2011; 112:767-76. [PMID: 22014999 DOI: 10.1016/j.tripleo.2011.06.036] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2011] [Revised: 06/22/2011] [Accepted: 06/27/2011] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Ameloblastic carcinoma combines the histologic features of ameloblastoma with cytologic atypia, regardless of whether it has metastasized. Because of its rarity, there are few immunoprofile studies of ameloblastic carcinoma and few comparative studies of ameloblastic carcinoma and ameloblastoma. In this study, we compared the expression levels of cytokeratins (CKs), matrix metalloproteinases (MMPs), and Ki-67 between ameloblastoma and ameloblastic carcinoma, and assessed the usefulness of these markers for differentiating the tumors. STUDY DESIGN We assessed CK7, CK14, CK18, CK19, MMP-2, MMP-9, and Ki-67 expression by immunohistochemistry in 10 cases of ameloblastoma and 7 cases of ameloblastic carcinoma and then compared expression patterns between the 2 groups. RESULTS Immunostaining for CK14 and CK19 was diffuse and strongly positive in both tumor types, but staining for CK7 was focally positive in only 1 case of ameloblastoma and absent in all cases of ameloblastic carcinoma. However, there was a significant difference in CK18 expression between the 2 tumors (P = .000). Whereas 80% of ameloblastomas showed negative reactivity for CK18, most cases of ameloblastic carcinomas showed a moderate to strong intensity of immunostaining for CK18. Regarding the expression of MMPs, there were significant differences in parenchymal MMP-2 and stromal MMP-9 expression between the 2 tumors. Compared to ameloblastoma, ameloblastic carcinoma showed significantly strong expression of MMP-2 in parenchymal cells (P = .001) and MMP-9 in stromal cells (P = .013). However, there were no differences in MMP-2 expression of stromal cells and MMP-9 expression of parenchymal cells between ameloblastoma and ameloblastic carcinoma. The mean Ki-67 labeling index (LI) of ameloblastic carcinomas was 17.21%, which was significantly higher than that of ameloblastomas (3.57%; P = .002). CONCLUSIONS The significant expression of CK18, parenchymal MMP-2, stromal MMP-9, and Ki-67 could provide useful markers for differentiating ameloblastic carcinoma from ameloblastoma.
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Affiliation(s)
- Hye-Jung Yoon
- Department of Oral Pathology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, South Korea
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Isomura ET, Okura M, Ishimoto S, Yamada C, Yamada T, Ono Y, Kishino M, Kogo M. Case report of extragingival peripheral ameloblastoma in buccal mucosa. ACTA ACUST UNITED AC 2009; 108:577-9. [PMID: 19778743 DOI: 10.1016/j.tripleo.2009.06.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Revised: 05/27/2009] [Accepted: 06/26/2009] [Indexed: 11/29/2022]
Abstract
A peripheral ameloblastoma (PA) is a rare variant of ameloblastoma that generally occurs in the extraosseous region; an extragingival PA is extremely rare. There have been 5 cases reported of a PA occurring in the buccal mucosa and 1 in the oral floor. We present the sixth known case of extragingival PA in the buccal mucosa, which occurred in an 88-year-old woman.
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Affiliation(s)
- Emiko Tanaka Isomura
- First Department of Oral and Maxillofacial Surgery, Graduate School of Dentistry, Osaka University, Osaka, Japan.
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Peripheral ameloblastoma in-situ: an evidential fact of surface epithelium origin. ACTA ACUST UNITED AC 2009; 108:763-7. [DOI: 10.1016/j.tripleo.2009.06.018] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2009] [Revised: 06/19/2009] [Accepted: 06/26/2009] [Indexed: 11/18/2022]
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