Cases reported "Odontogenic Tumors"

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1/69. Cemento-ossifying fibroma presenting as a mass of the parapharyngeal and masticator space.

    We report a case of cemento-ossifying fibroma that presented as a large extraosseous mass in the masticator and parapharyngeal space. CT scanning and MR imaging showed a large extraosseous mass with central conglomerated, well-matured ossified nodules and fatty marrow. The central matured ossified nodules were of low density on CT scans and high signal intensity on T1- and T2-weighted MR images. Multiplanar reformatted CT scans revealed the origin of the mass to be at the extraction site of the right lower second molar tooth.
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2/69. Adenomatoid odontogenic tumour: a case study with radiographic differential diagnostic considerations.

    Adenomatoid odontogenic tumours (AOT) are benign, hamartomatous odontogenic lesions that not uncommonly mimic a dentigerous cyst radiographically. Such a case as found involving an unerupted left maxillary canine in a 19-year-old Chinese female is described. The differential diagnosis of some common odontogenic cysts and neoplasms occurring in Malaysians, that may present in a dentigerous relationship to an unerupted tooth is discussed. A brief review of the radiographic literature on AOT is also included.
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3/69. Benign cementoblastoma.

    An unusual case of cementoblastoma is presented. It is the second case to be published demonstrating involvement of the pulp, and it is the first instance of a cementoblastoma that appears to have evolved from an impacted tooth. A review of the literature substantiates the fact that this lesion may not be so uncommon as was previously thought, and that pain and facial asymmetry may be significant clinical features.
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4/69. Odontogenic carcinoma occurring in a dentigerous cyst: case report and clinical management.

    This case report describes an unusual odontogenic carcinoma, which was detected during routine periodontal examination. The lesion occurred in a dentigerous cyst associated with an impacted third molar in an otherwise asymptomatic 66-year-old male patient. The impacted tooth and lesion were excised based on evidence of radiographic change and clinical findings. An unusual histopathologic presentation is reported. The treatment provided for this tumor and the management of impacted teeth is reviewed.
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5/69. Ameloblastic carcinoma ex ameloblastoma of the mandible with malignancy-associated hypercalcemia.

    ameloblastoma is a rare, locally destructive, benign neoplasm of the jawbones, which arises from epithelium derived from the epithelial components of the developing tooth. Ameloblastic carcinoma is the term used to designate any ameloblastoma in which there is histologic evidence of malignancy in the primary tumor, regardless of whether it has metastasized. Most ameloblastic carcinomas are presumed to have arisen de novo, with few cases of malignant transformation of ameloblastoma being apparent. hypercalcemia is the most common metabolic complication of malignancy. Although malignancy-associated hypercalcemia is often reported in association with other malignancies, it is exceedingly unusual in association with ameloblastoma, malignant ameloblastoma, or ameloblastic carcinoma. We describe a patient with multiple recurrences of ameloblastoma, with subsequent malignant transformation presenting with malignancy-associated hypercalcemia.
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6/69. Developing cementoblastoma: case report and update of differential diagnosis.

    The benign cementoblastoma is a rare odontogenic tumor that tends to occur in the jaws of young people. It is most commonly characterized as a circumscribed radiopaque mass attached to the tooth roots and rimmed by a thin radiolucent zone. Early lesions, however, are radiolucent and can be confused with periapical conditions resulting from nonvital teeth. The tumor is seldom recognized until it produces pain or expansion of the jaw. If the diagnosis is established early, the tooth can be saved by endodontic treatment followed by apical root resection and surgical enucleation of the tumor. This case report documents the origin, development, and unlimited growth potential of a cementoblastoma. Radiographs taken at yearly intervals reveal an initial widening of the periodontal ligament space that grew into a 3-cm mixed radiolucent and radiopaque tumor over a 4-year period. The differential diagnosis and some criteria to help distinguish the cementoblastoma from similar-appearing lesions are reviewed.
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7/69. Two cases of totally submerging buried primary molars: characterization of clinical behavior and discussion of cause.

    Submerging buried tooth is a rare condition whose clinical characteristics are unclear. Two cases are reported of submerging buried maxillary second deciduous molar. A review of the literature in Japanese and English provides the clinical condition of the lesion and allows for discussion of its causes.
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8/69. Ameloblastic fibroma of the anterior maxilla presenting as a complication of tooth eruption: a case report.

    Ameloblastic fibroma is a rare mixed odontogenic tumour, which is extremely uncommon in the anterior maxillary region. A case report is presented where failure of eruption of an upper central incisor was the presenting feature.
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9/69. Calcifying epithelial odontogenic (Pindborg) tumor with malignant transformation and metastatic spread.

    BACKGROUND: Pindborg tumors (calcifying epithelial odontogenic tumors) are uncommon neoplasms of odontogenic origin most often located in the posterior mandible. First described in detail in 1955 by Pindborg, these tumors are considered benign but can be locally aggressive in nature, with recurrence rates of 10% to 15% reported. The malignant form of this tumor is exceedingly rare. methods: We describe the case of a 64-year-old woman initially treated for a painful infected left mandibular third molar. The patient underwent extraction of the tooth and excision of an associated soft tissue component. Subsequent histologic review identified a Pindborg tumor of the left posterior mandible. RESULTS: After initial excision, this tumor recurred twice, with the recurrences exhibiting a progression to a malignant Pindborg tumor (odontogenic carcinoma) with vascular invasion and spread to a cervical lymph node. Further treatment involved radical surgery and adjuvant radiotherapy. At last review 12 months after treatment, the patient was disease free. CONCLUSIONS: This article describes only the second case of odontogenic carcinoma. The transformation from benign to malignant histologic findings has not previously been documented in this tumor. The salient clinical features of this case are presented along with supportive pathologic and radiologic evidence.
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10/69. Primary intraosseous carcinoma of the jaw: pooled analysis of world literature and report of two new cases.

    Primary intraosseous carcinoma (PIOC) is a rare malignant neoplasm of the jaw. These tumours are believed to arise from the odontogenic epithelium and hence are also referred to as odontogenic carcinoma. A detailed search was made for squamous cell PIOC of the jaw in English literature using medline Cancer CD. The data obtained were transferred onto dBase software. Two detailed case reports of patients treated at Regional Cancer Centre, Trivandrum during 1996 and 1997 were also included. A pooled analysis was carried out. survival analysis was carried out using Kaplan-Meier method and log-rank statistics were used for comparing survival. A total of 35 cases were analysed, of which 33 were from published literature. The mean age of the patients at the time of diagnosis was 52.3 years with male to female ratio being 2.5:1. Posterior mandible was the predominant site. The median follow-up time was 28 months. overall survival at 5 years was 37.8% (95% CI; 14.8-61.0) while the corresponding disease free survival was 29.8% (95% CI; 9.2-54.1). Primary intraosseous carcinoma is a rare tumour of jawbones, characterized by progressive swelling of the jaw, pain and loosening of tooth. The tumour is locally aggressive and metastasizes to regional nodes. The overall and disease free survival is poor with almost 50% patients failing loco-regionally within the first 2 years of follow-up.
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