Aileen Viray 05/13/2005 MRI of the Head Multiple plain and contrast-enhanced axial, coronal and sagittal images reveal an ill-defined moderately contrast enhancing solid mass involving the left side of the nasopharynx with infiltration to the right as well as into the left clivus and sphenoid sinus. This also extends into the left cavernous sinus region. The mass measures 4 x 3.5 x 4.0 cm with a retention cyst in the sphenoid sinus. There is no brain edema. The rest of the brain parenchyma is grossly normal. The ventricles are not dilated. There is no midline shift. There are multiple enlarged lymph nodes in the right posterior cervical spaces measuring 1.5 to 3.0 cm. There are few subcentimeter lymph nodes on the left side. The left inferior nasal turbinate is enlarged or congested. There is mucosal thickening in the right maxillary sinus. The rest of the paranasal sinuses are clear. IMPRESSION: 1. LEFT-SIDED NPCA WITH EXTENSION TO THE RIGHT SIDE, SPHENOID SINUS, CLIVUS AND CAVERNOUS SINUS. 2. METASTATIC LYMPH NODES, RIGHT POSTERIOR CERVICAL SPACE. 3. POLYSINUSITIS WITH RETENTION CYST IN THE SPHENOID SINUS.