Unusual imaging appearance of a rare cortical ependymoma mimicking angiocentric glioma

• Published in: Neurological sciences Vol. 41; no. 7; pp. 1935 - 1938
• Main Authors: Senthilvelan, Santhakumar, Kandasamy, Sathish, Chandrasekharan, Kesavadas, Thomas, Bejoy, AN, Deepti
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.07.2020; Springer Nature B.V
• Subjects: Brain Neoplasms - diagnostic imaging; Brief Communication; Convulsions & seizures; Data collection; Edema; Ependymoma - diagnostic imaging; Ethics; Glioma; Glioma - diagnostic imaging; Humans; Magnetic Resonance Imaging; Medicine; Medicine & Public Health; Mimicry; Neurology; Neuroradiology; Neurosciences; Neurosurgery; Psychiatry; Radiologists; Tumors; Ventricle; Unusual appearance; Neuroimaging; Differential diagnosis; Glioma; MRI; Ependymoma
• ISSN: 1590-1874; 1590-3478
• DOI: 10.1007/s10072-020-04364-y

Cortical ependymomas are uncommon lesions. We report a cortical ependymoma displaying an unusual imaging pattern. The lesion demonstrated a T1 hyperintense rim and limited perilesional edema but lacked contrast enhancement. T1 hyperintense rim and stalk-like ventricular extension of FLAIR hyperintensity have previously been considered pathognomonic of angiocentric glioma. Hence, we conclude that the radiologists should be aware of this uncommon imaging pattern of cortical ependymoma. The condition warrants prompt surgical management in view of the increased potential for higher grade transformation, unlike grade I roman numeral may be given angiocentric gliomas.