Fig. 1
From: Supratentorial dural-based collision of cavernoma and meningioma: a case report
a Preoperative MRI. T1 weighted image, coronal plane. A mass sized 32 * 30 * 35 mm on the surface of the right frontal lobe, with heterogeneous iso- hyperintensive signal (lesion has «popcorn» sign), right chronic subdural hematoma with midline brainshift 3 mm. b Preoperative MRI. T2 weighted image, axial plane. This mass shows similar popcorn-shaped characteristics with perifocal edema. c Preoperative MRI. SWI sequence, axial plane. Ring of hypointensity around lesion (arrows)