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Two cases of dumb-bell shaped dermoid cyst penetrating the orbital wall through the bony defect Yoshiyuki Nishigaki 1 , Atsushi Azumi 2 , Masanori Inoue 2 , Akira Negi 2 1Dept of Ophthalmol, Shakaihoken Kobe Central Hosp 2Dept of Ophthalmol, Kobe Univ Sch of Med pp.1269-1273
Published Date 2001/6/15
DOI https://doi.org/10.11477/mf.1410909041
  • Abstract
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We observed two cases of intra- and extraorbital dermoid cyst. One was a 29-year-old man. He had had a tumor lateral to the left eyebrow since 15 years before. Proptosis was induced by pushing the tumor. The other was a 52-year-old woman with metamorphopsia in her left eye. Funduscopy showed retinochoroidal folds. Computed tomography showed orbital tumor in both cases. The tumor penetrated the lateral orbital wall and was dumb-bell shaped. Both cases underwent removal of the tumor through lateral approach. The tumor was continuous through a bony defect in the sphenozygomatic suture. The capsule of the tumor was tightly adherent to the periosteum and ruptured during surgery. The tumor proved to be dermoid cyst. Lateral approach is indicated for dermoid cyst located intra- and extraorbitally. These cases illustrate that due precaution is necessary to avoid rupture of the capsule because of tight adhesion between the capsule and the periosteum in adults.


Copyright © 2001, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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