• Title, Summary, Keyword: Jaw Neoplasms

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Clear cell odontogenic carcinoma mimicking a cystic lesion: a case of misdiagnosis

  • Kim, Minkyu;Cho, Eunae;Kim, Jae-Young;Kim, Hyun Sil;Nam, Woong
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.40 no.4
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    • pp.199-203
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    • 2014
  • Clear cell odontogenic carcinoma (CCOC) is a rare jaw tumor that was classified as a malignant tumor of odontogenic origin in 2005 by the World Health Organization because of its aggressive and destructive growth capacity and metastasis to the lungs and lymph nodes. We report a case of a 66-year-old female who had swelling, incision and drainage history and a well-defined unicystic radiolucent lesion that was comparable to a cystic lesion. At first, the patient received decompression, and the lesion size decreased. Three months after decompression, cyst enucleation was performed. The pathologic result indicated that the lesion was CCOC. In this report we emphasize that patients with painful cystic lesions in addition to jaw enlargement and loosening teeth should be considered for the possibility of malignancy.

Radiographic manifestations of fibroblastic osteosarcoma: A diagnostic challenge

  • Tahmasbi-Arashlow, Mehrnaz;Barnts, Kelcie Louise;Nair, Madhu K.;Cheng, Yi-Shing Lisa;Reddy, Likith V.
    • Imaging Science in Dentistry
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    • v.49 no.3
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    • pp.235-240
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    • 2019
  • Osteosarcoma is the most common primary bone tumor after plasma cell neoplasms. Osteosarcoma has diverse histological features and is characterized by the presence of malignant spindle cells and pluripotent neoplastic mesenchymal cells that produce immature bone, cartilage, and fibrous tissue. Osteosarcoma most frequently develops in the extremities of long bones, but can occur in the jaw in rare cases. The clinical and biological behavior of osteosarcoma of the jaw slightly differs from that of long-bone osteosarcoma. The incidence of jaw osteosarcoma is greater in the third to fourth decades of life, whereas long-bone osteosarcoma mostly occurs in the second decade of life. Osteosarcoma of the jaw has a lower tendency to metastasize and a better prognosis than long-bone osteosarcoma. Radiographically, osteosarcoma can present as a poorly-defined lytic, sclerotic, or mixed-density lesion with periosteal bone reaction response. Multi-detector computed tomography is useful for identifying the extent of bone destruction, as well as soft tissue involvement of the lesion. The current case report presents a fibroblastic osteosarcoma involving the left hemimandible with very unusual radiographic features.

Odontogenic myxoma : report of 2 cases

  • Kim Joo-Yeon;Park Geum-Mee;Cho Bong-Rae;Nah Kyung-Soo
    • Imaging Science in Dentistry
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    • v.32 no.4
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    • pp.231-234
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    • 2002
  • The odontogenic myxoma is an infiltrative benign tumor of bone that occurs almost exclusively in the jaw bones and comprises 3% to 6% of odontogenic tumors. This neoplasm is thought to arise from the primitive mesenchymal structures of a developing tooth, including the dental follicle, dental papilla, or periodontal ligament. Radiographically the odontogenic myxoma may produce several patterns: unicystic, multilocular, pericoronal, and radiolucent-radiopaque, making the differential diagnosis difficult. In this report, two cases of the odontogenic myxoma in the jaw bones are presented. The first case involved only the mandible, while the second case involved the maxilla. Both cases presented extensive multilocular radiolucencies characteristic of odontogenic myxoma.

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Osteosarcoma of the mandible: A case report with an early radiographic manifestation

  • Samraj, Lavanya;Kaliamoorthy, Sriram;Venkatapathy, Ramesh;Oza, Nirima
    • Imaging Science in Dentistry
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    • v.44 no.1
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    • pp.85-88
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    • 2014
  • Osteosarcoma is a classical malignant bone-forming neoplasm which usually presents with an aggressive clinical course. The current case is presented with the radiographic feature of widening of the periodontal ligament space of the involved teeth, which is considered to be the earliest radiographic manifestation of osteosarcoma involving the jaw bone. The main aim of this case report was to focus on the importance of early diagnosis of this tumor based on clinical and radiographic examinations, and confirmation by histopathology. Considering the rarity of the disease type and particularly taking into account the fast progression and aggressiveness of this neoplasm, it is clear that the presentation of a clinical case represents a major contribution to better understanding of osteosarcomas involving the jaw bone.

Metastatic gastric adenocarcinoma to the mandible (하악에 전이된 위 선양암종)

  • Lee Ji-Un;Kwon Ki-Jeong;Ahn Hyoung-Suk;Koh Kwang-Joon
    • Imaging Science in Dentistry
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    • v.35 no.3
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    • pp.179-183
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    • 2005
  • Metastatic tumors to the jaw bones are uncommon. The most common metastatic tumors to the jaw bones are the breast, lung and kidney. In the jaw bones, the common location of the lesions is the mandible, and the posterior area of the mandible is more commonly affected. The radiographic appearance is quite variable. In this report, a very rare case of metastatic gastric adenocarcinoma to the mandible is presented. The patient had undergone a gastrectomy 3 years ago.

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A swelling of the maxilla: a case report and differential diagnosis

  • Bhargava, Puneet;Khan, Saba;Sharma, Rohit;Agwani, Khalid;Gupta, Sahil
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.40 no.6
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    • pp.308-312
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    • 2014
  • Ossifying fibromas are benign fibro-osseous tumors of mesenchymal origin. Although ossifying fibromas have principally been found in the jaw, they have also been reported in the frontal, ethmoid, sphenoid, and temporal bones, as well as the orbit and anterior cranial fossa. Ossifying fibromas affecting the jaw exhibit variable behaviors ranging from slow growth to occasionally aggressive local destruction. In the present article, we discuss a differential diagnosis considered for maxillary swellings and report a rare case of ossifying fibroma occurring in the maxilla.

Central odontogenic fibroma of the simple type

  • Hwang Eui-Hwan;Lee Sang-Rae
    • Imaging Science in Dentistry
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    • v.32 no.4
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    • pp.227-230
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    • 2002
  • The central odontogenic fibroma is a rare benign neoplasm, and considered to be derived from the mesenchymal tissue of dental origin. It is a poorly defined tumor of the jawbones which has only been infrequently reported in the literature. We report a histologically proven case of simple-type central odontogenic fibroma, which affected the left canine-premolar region of the maxilla in a 52-year-old woman.

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CBCT findings of periapical cemento-osseous dysplasia: A case report

  • Eskandarloo, Amir;Yousefi, Faezeh
    • Imaging Science in Dentistry
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    • v.43 no.3
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    • pp.215-218
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    • 2013
  • Periapical cemento-osseous dysplasia (PCOD) is a subtype of cemento-osseous dysplasia that usually occurs in middle-aged black women. This report described a case of a 45-year-old Iranian woman who was diagnosed with PCOD on the basis of cone beam computed tomographic (CBCT) findings. CBCT enabled detailed visualization of the bone changes. This report described the special radiographic characteristics of PCOD, including discontinuity of the lingual cortex on the CBCT sectional and three-dimensional images.

Verification of Clinical Usefulness of Jaw Tracking in IMRT (IMRT에 있어 Jaw Tracking 의 임상적 유용성 검증)

  • Kim, Jin-young;Kim, Ki-Hwan
    • Journal of the Korean Society of Radiology
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    • v.14 no.2
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    • pp.105-109
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    • 2020
  • Intensity-modulated radiotherapy(IMRT) has disadvantages such as increasing the low doses of irradiation to normal tissues and accumulated dose for the whole volume by leakage and transmission of the Multi Leaf Collimator (MLC). The accumulated dose and low dose may increase the occurrence of secondary malignant neoplasms. For this reasons, the jaw tracking function of the TrueBeam (Varian Medical Systems, Palo Alto, CA) was developed to reduce the leakage and transmission dose of the MLC with existing linear accelerators. But quantitative analysis of the dose reduction has not been verified. Therefore, in the present study, we intended to verify the clinical possibility of utilizing the jaw tracking function in brain tumor with comparison of treatment plans. To accomplish this, 3 types of original treatment plans were made using Eclipse11 (Varian Medical Systems, Palo Alto, CA): 1) beyond 2 cm distance from the Organs At Risk (OARs); 2) within 2 cm distance from the OARs; and 3) intersecting with the OARs. Jaw tracking treatment plans were also made with copies of the original treatment planning using Smart LMC Version 11.0.31 (Varian Medical Systems, Palo Alto, CA). A comparison between the 2 types of treatment planning methods was performed using the difference of the mean dose and maximum dose to the OARs in cumulative Dose Volume Histogram (DVH). In the DVH comparison, the maximum difference of 0.5 % was observed between the planning methods in the case of over 2 cm distance, and the maximum of 0.6 % was obtained for within the 2 cm distance. For the case intersecting with the OAR, the maximum difference of 2 % was achieved. According to these results, it could be realized that the differences of mean dose and maximum dose to the OARs was larger when the OARs and PTV were closer. Therefore, treatment plans with the jaw tracking function consistently affected the dose reduction and the clinical possibility could be verified.

Ameloblastic fibro-odontoma of the mandible (하악에 발생된 법랑모세포섬유치아종)

  • Kang Hyung-Wuk;Hwang Eui-Hwan;Lee Sang-Rae
    • Imaging Science in Dentistry
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    • v.33 no.1
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    • pp.59-62
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    • 2003
  • Ameloblastic fibro-odontoma is an extremely rare odontogenic tumor composed of proliferating ectodermal and mesenchymal components of odontogenic tissue, containing hard tooth structure. It occurs predominantly in children and young adults. The mandibular molar-ramus area is the most frequently observed location, presenting radiographically as a well-circumscribed and radiolucent-radiopaque tumor. A case involving a 24-year-old woman presenting with a large ameloblastic fibro-odontoma of the posterior mandible is reported. This case is of radiologic interest because two distinct calcification patterns were observed.

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