CT
Axial non-contrast
Axial bone window
Coronal bone window
Axial non-enhanced CT shows mostly isodense lesion with hyperdense elements situated in the left frontobasal region. The bone windows display multiple linear hyperdense intralesional calcifications, which appear as rings-and-arcs calcification. The lesion causes marked bone resorption evident at the orbital portion of the frontal bone and the greater wing of left sphenoid.