Temporomandibular joint involvement caused by metastatic tumor: Report of two cases

DOI 6 References
  • SUENAGA Shigeaki
    Department of Dental Radiology, Kagoshima University Dental School
  • MORITA Yasuhiko
    Department of Dental Radiology, Kagoshima University Dental School
  • INDO Hiroko
    Department of Dental Radiology, Kagoshima University Dental School
  • KAWANO Kazunori
    Department of Dental Radiology, Kagoshima University Dental School
  • SUGIHARA Kazumasa
    First Department of Oral Maxillofacial Surgery, Kagoshima University Dental School
  • NOIKURA Takenori
    Department of Dental Radiology, Kagoshima University Dental School

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  • 転移性腫ようと考えられる悪性腫ようにより顎関節部が浸潤された２例

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Abstract

Two cases of metastatic tumor from the colon and lung to the temporomandibular joint (TMJ) are presented.<BR>1. Panoramic and CT images demonstrated moth-eaten or irregular bony destruction and loss of the cortical layer of the condylar process, suggestive of malignancy.<BR>2. MR imaging was valuable for visualizing the extent of lesions and differentiating benignity from malignancy of lesions in the TMJ. In this study, MR images revealed tumor mass involvement with an ill-defined margin on the TMJ. In addition, bone marrow signal changes were observed in the condylar process, indicating tumor involvement.<BR>3. Radioisotope bone scanning has been determined to be more sensitive than conventional radiography in the detection of metastatic bone lesions.

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