Fig. 4
From: Neuroendoscopic treatment of multiple intracranial arachnoid cysts: a case report
Images obtained 9Â months after the operation. a T2-weighted coronal MR image. Arrow shows that the left anterior cranial fossa is communicated with the left ethmoid sinus. b and c The coronal and axial high-resolution bone window noncontrast CT images: Arrow indicates that there is a poor continuity of bone in the left ethmoid