A distinctive pathological meningioma completely without enhancement and dural tail sign on imaging findings.

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A distinctive pathological meningioma completely without enhancement and dural tail sign on imaging findings.

World Neurosurg. 2017 Feb 27;:

Authors: Zhang Q, Wang X

Abstract
BACKGROUND: It has been known that meningiomas are common intracranial benign tumors, which could be enhanced significantly on CT or MRI after administration of contrast medium. The authors report on an extremely rare case of meningioma with distinctive pathological features presenting completely without enhancement and dural tail sign (DTS) on neuroimaging examination.
CASE DESCRIPTION: A 42-year-old man presented with occasional headache. Neurological examination was negative. CT scans showed a mass lesion located in temporal region with homogeneous hyperdensity and foci calcification. The patient's MRI studies demonstrated the lesion was hypointense on T1-weighted and T2-weighted MR images. After administration of Gd-DTPA, the lesion revealed neither enhancement nor dural tail sign. After gross total excision of the lesion was accomplished, histopathological examination confirmed the diagnosis of hyalinedegeneration-rich fibrous meningioma, which represented a distinctive pathologic manifestation.
CONCLUSIONS: This report illustrates common meningiomas possess the rare occurrence of uncommon neuroimaging characteristics and pathological features. According to radiological and pathological features, the causes of rare imaging characteristics were discussed.

PMID: 28254600 [PubMed - as supplied by publisher]

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