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Japanese

Fibrous Dysplasia of the Skull Presenting Interesting Neuroradiological Findings Atsushi KEYAKI 1 , Sachio NABESHIMA 1 , Hironobu BESSHO 1 , Takahiro UJI 1 , Kazushi HIGUCHI 1 , Takeshi SATO 1 , Masanori MORIMOTO 2 , Koreaki MORI 2 1Department of Neurosurgery, Tenri Hospital 2Department of Neurosurgery, Kochi Medical School Keyword: fibrous dysplasia , MRI , cerebral angiography , intraosseous meningioma pp.275-279
Published Date 1999/3/10
DOI https://doi.org/10.11477/mf.1436901697
  • Abstract
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A case of fibrous dysplasia of the frontal bone in a 51-year-old male is described. He was admitted toour hospital with a hard, painless growing mass in the left frontal region. A symmetrical protrusion of hisforehead has been observed since several years before. Neurological examination and laboratory data re-vealed no abnormalities. Skull x-rays demonstrated two different lesions. One showed a ground-glass ap-pearance in the supraorbital region, and the other showed a radiolucent lesion with marginal sclerosis cros-sing the left coronal suture. CT scan revealed an intradiploic multilocular mass. T1 and T2 MR imagesshowed an abnormal low-intensity mass, and heterogeneous gadolinium-enhancement was noticed in bothlesions. Selective external carotid angiography showed tumor stain in the left coronal mass fed by middlemeningeal and superficial temporal arteries mimicking intraosseous meningioma. On the other hand, a su-praorbital hyperostotic lesion showed no apparent vascularity. An operation was performed on the leftcoronal lesion to verify the nature of the progressively enlarging mass, which was histologically confirmedto be a fibrous dysplasia rich in numerous vessels. Postoperative course was uneventful. Correlation withclinical activity and enhancement pattern was not known, however, careful observation is required inhypervascular fibrous dysplasia such as was observed in this case.


Copyright © 1999, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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