Fig. 11

Poorly differentiated carcinoma. A 66-year-old female with swelling of the parotid gland on the right. The axial T1-w image (A) shows a large hypointense lesion predominantly in the deep lobe of the parotid gland on the right with extension into the superficial lobe. Note the irregular borders and the small lymph node adjacent (arrow) to the parotid gland. The lesion is slightly heterogeneous on T2-w (B) with hypointense areas (below the star). The T1-w fat saturated image after contrast shows strong and diffuse enhancement (C). There are many lymph nodes on the right side as seen in the T1-w fat saturated image at a lower level (D). There is perineural spread along the mandibular nerve with asymmetrical thickening and enhancement of the nerve in the foramen ovale on the right (arrowhead) as seen in the T1-w fat saturated images after contrast administration in the coronal plane (E) and axial plane (F)