Intracranial adenoid cystic carcinoma mimicking meningioma: report of two cases |
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| Authors: | T Morioka T Matsushima K Ikezaki S Nagata M Ohta K Hasuo M Fukui |
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| Institution: | (1) Department of Neurosurgery, Neurological Institute Faculty of Medicine, Kyushu University 60, 3-1-1 Maidashi, Higashi-ku, S12 Fukuoka, Japan;(2) Department of Radiology, Faculty of Medicine, Kyushu University, Fukuoka, Japan |
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| Abstract: | Two cases of intracranial adenoid cystic carcinoma mimicking meningioma are reported. In one, MRI showed not only a homogeneously enhancing extra-axial tumour attached to the dura mater of the posterior cranial fossa, but also surrounding dural enhancement, the  dural tail sign . In the second, CT demonstrated a well-demarcated enhancing extra-axial tumour, indistinguishable from a sphenoid ridge meningioma extending into the orbit. The neuroradiological features of intracranial adenoid cystic carcinoma may thus closely resemble those of meningioma. |
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| Keywords: | Adenoid cystic carcinoma Meningioma Dural tail sign |
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