Three-Dimensional Multidetector CT for Anatomic Evaluation of Orbital Tumors
Figure 2
46-year-old man with sinonasal neuroendocrine carcinoma. (a) Axial T1 postcontrast MRI shows the tumor in the right sinonasal cavity with extension through the lamina papyracea into the left orbit (arrow). (b) Coronal T1 postcontrast MRI shows tumor extending into the anterior cranial fossa (arrow). (c) 3D image gives a frontal view of the sinonasal tumor with orbital extension and medial displacement of the medial rectus muscle (arrow). (d) 3D image that has been rotated; the lateral orbital wall, optic nerve, and extraocular muscles have been removed to demonstrate a lateral view of the tumor (arrow). (e) 3D image giving a view from above the tumor in the anterior cranial fossa (arrow). Note the anterior cerebral arteries (arrowhead).
