Cases reported "Maxillary Neoplasms"

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1/57. Oral plasmablastic lymphoma in previously undiagnosed hiv disease.

    Non-Hodgkin's lymphoma is the second most common hiv-associated malignancy. This report details a case of the recently described entity plasmablastic lymphoma of the mouth in a patient who was later found to have severe hiv disease. The tumor manifested as a large ulcerated mass of the left maxillary alveolus, causing bony destruction and tooth mobility. Histologic examination of lesional tissue revealed a lymphoid tumor with a high proliferation rate containing lymphoplasmacytoid cells that were reactive to the plasma cell marker VS38c but not to CD20 or CD79a; these are features of the recently reported non-Hodgkin's lymphoma termed plasmablastic lymphoma. This is only the second report of an unusual tumor that has a predilection for the orofacial tissues.
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2/57. 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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3/57. Metastatic melanoma of the maxilla presenting as a gingival swelling.

    Malignant melanoma metastatic to the gingiva has been reported only once. We present a case in which the occurrence of melanoma in the gingiva followed extraction of a periapically "abscessed" tooth. Since the initial periapical mass may well have been a metastatic tumor, particularly in a patient undergoing therapy for disseminated malignant disease, the need for biopsy of such lesions is emphasized.
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4/57. 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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5/57. 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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6/57. Compound odontoma--diagnosis and treatment: three case reports.

    Odontomas are the most common type of odontogenic tumors and generally they are asymptomatic. This paper describes three cases of compound odontomas diagnosed in children due to dislodgement or over-retention of primary anterior teeth and/or swelling of the cortical bone. In all cases, the surgical excision of the lesions was performed and, in one case, orthodontic treatment was adopted in order to move an impacted permanent tooth to its normal position. The results achieved indicate that the early diagnosis of odontomas allows the adoption of a less complex and expensive treatment and ensures better prognosis.
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7/57. 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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8/57. Calcifying odontogenic cyst. Report of two cases.

    Calcifying odontogenic cyst(COC) is an uncommon developmental odontogenic cyst and was first described by Gorlin in 1962. It is considered as extremely rare and accounts for only 1% of the jaw cysts reported. Here, we present two cases of which one occurred in a 32 year old female with a swelling in the lower anterior region crossing the midline and another in a 29 year old male with a swelling in the upper anterior region without crossing the midline. The radiograph revealed a well circumscribed radiolucency in the first case and with some specks of opacities in the second case. It was not associated with any missing or impacted tooth. Histopathological examination was done with hematoxylin and Eosin and in addition it was studied immunohistochemically for cytokeratin. The Classical histological features of lining epithelium in the form of cords, presence of ghost cells and some amount of dentinoid tissue were seen. The nature of COC is controversial. Here we have discussed the controversies regarding COC as well as the various proposed classifications for this lesion. Based on the histopathological findings, the diagnosis was confirmed as calcifying odontogenic cyst. These cases are presented here for its rarity.
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9/57. Recurrent infection of a complex odontoma following eruption in the mouth.

    Odontomas are the most common odontogenic tumors, and are classified as either compound or complex lesions. Although its underlying etiology remains unclear, a number of factors appear to be involved (e.g., prior trauma). The lesions are generally diagnosed in the second decade of life, often in the context of routine dental X-ray examinations. A complex odontoma is described in a 22-year-old woman referring discomfort due to overinfection following its aperture into the oral cavity in the distal alveolar region of 2.6. Initial treatment consisted of antibiotics and antiinflammatory drugs. Computed axial tomography revealed a solid, irregular mass in the distal zone of the left maxilla, imprinting upon the region of the maxillary sinus on the same side. Surgical resection was performed, raising the alveolar mucosa and upper left vestibular fundus. The surgical piece contained the amorphous adenoma mass and the tooth 2.7.
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10/57. Pigmented intraosseous odontogenic carcinoma of the maxilla: a pediatric case report and differential diagnosis.

    We report a pigmented intraosseous odontogenic carcinoma of the maxilla occurring in a 6-year-old Japanese boy. Grossly, the tumor showed solid, gray-yellow, and markedly pigmented appearance. histology showed neoplastic growths of atypical epithelial cells that occasionally contained melanin pigments. melanocytes with dendritic processes were often found in the tumor cell clusters, and solitary or aggregated melanophages were scattered within the dense fibrovascular stroma. The tumor cells were diffusely positive for cytokeratins and epithelial membrane antigen, and focally positive for vimentin, neuron specific enolase, neurofilament protein, carcinoembryonic antigen, and amelogenin. Ultrastructural studies showed well-developed intercellular junctions, mainly desmosomes, and glycogen particles. In addition, some tumor cells contained melanosomes and/or a few neurosecretory granules. We consider that the present tumor suggests a close association of ectoderm, mesenchyma, and neuroectoderm in embryogenesis of the tooth, and can raise a diagnostic confusion with melanotic neuroectodermal tumor.
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