Dermoid Cyst in the Floor of the Mouth with a Typical Finding of Marble Pattern by MR Imaging

DOI
  • Kawabata Yoshihiro
    Department of Maxillofacial Radiology, Kagoshima University Graduate School of Medical and Dental Sciences
  • Nagasawa Taisuke
    Department of Maxillofacial Radiology, Kagoshima University Graduate School of Medical and Dental Sciences
  • Moriyama Taiji
    Department of Oral and Maxillofacial Surgery, Healthcare Corporation Seiun Hospital
  • Nozoe Etsuro
    Department of Oral and Maxillofacial Surgery, Kagoshima University Graduate School of Medical and Dental Sciences
  • Kawano Kazunori
    Department of Maxillofacial Radiology, Kagoshima University Graduate School of Medical and Dental Sciences
  • Suenaga Shigeaki
    Department of Maxillofacial Radiology, Kagoshima University Graduate School of Medical and Dental Sciences
  • Indo Hiroko
    Department of Maxillofacial Radiology, Kagoshima University Graduate School of Medical and Dental Sciences
  • Nakamura Norifumi
    Department of Oral and Maxillofacial Surgery, Kagoshima University Graduate School of Medical and Dental Sciences
  • Semba Ichiro
    Department of Oral Pathology, Kagoshima University Graduate School of Medical and Dental Sciences
  • Majima Hideyuki
    Department of Maxillofacial Radiology, Kagoshima University Graduate School of Medical and Dental Sciences

Bibliographic Information

Other Title
  • MRIにて「おはじき(marble)」様の典型的所見を呈した類皮嚢胞

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Description

Dermoid cyst is painless, slow growing and most commonly occur in young adults. Histologically, this cyst is lined by epidermis like epithelium and contains dermal structures in the cyst wall. We report a patient with dermoid cyst in the floor of the mouth with a typical findings of marble pattern by MR imaging. A 19-year-old female noticed painless swelling in the sublingual region about 1 year before presenting at our hospital with increasing swelling. MRI was useful in the diagnosis of this case. On T2-weighted MR images showed a typical image of marble pattern of the mass. MR-signals of the marble pattern were moderate intensities and lower than that of fat. High intensity area filled the space around the marble pattern. We guessed that a cause of typical finding of marble pattern by MR imaging. Many ball-like solid components may be formed by keratin debris and fat tissues. These solid components may be filled with liquid components. Active and dynamic surrounding tissue in the sublingual region may influence marble pattern accompanied with the appropriate formation of ball-like solid components and liquid components.

Journal

  • Shika Hoshasen

    Shika Hoshasen 55 (2), 73-75, 2015

    Japanese Society for Oral and Maxillofacial Radiology

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