Fig. 1
From: Brain stones revisited—between a rock and a hard place
A 59-year-old female with back pain and an abnormal bone scan that showed a focal lesion in the skull. The faint calcification seen at the lateral skull x-ray (a) was confirmed on non-contrast-enhanced CT (NCECT) to be a calcified meningioma overlying the right frontal cortex (b), better visualised on the 3D reconstruction (c). Note the displacement of adjacent brain parenchyma (“cortical buckling”), which strongly suggests the extra-axial location of this lesion