Fig. 2
From: Brain stones revisited—between a rock and a hard place
Dural osteoma. A 53-year-old female who presented with a headache and distant history of head trauma. The FLAIR (a) and MIP-SWI (b) MRI sequences showed an area of signal loss (white arrows) in the right temporal lobe initially thought to represent an enlarged post-traumatic air cell. Subsequent NCECT (c) and 3D reconstruction (d) revealed a solid calcified lesion (black arrow) adherent to the squamous part of the temporal bone. Note the cortical buckling (a), which suggests an extra-axial location. The homogeneously solid calcification (c) suggests a dural osteoma instead of a dural ossification