Fig. 1

a and b MRI of case 1. a coronal T1WI showing the superonasal mass (arrow). b Axial T2WI showing an ill-defined and heterogeneous mass and adjacent medial rectus (arrow). c MRI of case 2. Axial T1 showing an ill-defined and heterogeneous superonasal mass and adjacent medial rectus (arrow). d Axial CT of case 3. A well-defined intraconal mass adjacent to the anterior optic nerve (arrow). e and f MRI of case 4. e Coronal T1 W1 showing the superonasal mass and no adjacent medial rectus (arrow). f Axial T1 W1 showing the ill-defined and heterogeneous superonasal mass (arrow). g and h: CT of case 5. g Axial CT showing a well-defined intraconal lesion with a calcified mass (arrow). h Optic nerve was compressed and dislocated but integrated into the structure (arrow)