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Intracranial Chondroma Arising from the Skull Base: Two Case Reports Featuring the Image Findings for Differential Diagnosis Tetsuhiro HIGASHIDA 1 , Katsumi SAKATA 1 , Hiroshi KANNO 1 , Yutaka TANABE 1 , Takashi KAWASAKI 1 , Isao YAMAMOTO 1 1Department of Neurosurgery,Yokohama City University Keyword: skull base , chondroma , differential diagnosis , treatment strategy pp.495-501
Published Date 2007/5/10
DOI https://doi.org/10.11477/mf.1436100530
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 We reported two cases of intracranial skull base chondroma and discussed the differential diagnosis and the treatment strategies. The first case was a 39-year-old male who presented with left exophtalmos, visual loss and oculomotor disturbance. MRI showed a huge tumor occupying the bilateral cavernous sinus. Partial removal of the tumor was performed through the left orbitozygomatic subtemporal approach. The second case was a 54-year-old male who presented with left hemiparesis. MRI showed a brain stem infarction with a huge tumor located at the right middle fossa. Partial removal was performed through the right orbitozygomatic subtemporal approach. In these two cases, the histopathological diagnosis of the tumors was benign chondroma and the size of residual tumors have not changed for one year without any additional therapy. Although preoperative definite diagnosis for skull base chondromas is difficult, strategies for diagnosis and treatment without any complication are essential. In our cases, chondromas showed low uptake in PET images, which might be useful for differentiation between chondromas and chordomas. The current popular surgical approach for parasellar tumors is transcranial such as the orbitozygomatic subtemporal approach. In surgical removal of skull base chondromas, it is advisable to try to confirm the diagnosis preoperatively with characteristic image findings and to consider the best approach in each case to decompress the involved nerves without any complications.


Copyright © 2007, 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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