Figure 1

Coronal MRI scans of malignant myoepithelioma development in the present case. Initial T1-weighted post-contrast images taken at symptom onset were normal (A). Follow-up images 1 month later depicted a new, left cavernous sinus mass with heterogeneous signal intensity (B). Preoperative images indicated the tumor mass significantly increased (C). Post-biopsy images displayed more progressive tumor development, since the tumor filled the left cavernous sinus and extended into the ipsilateral middle fossa (D). Postoperative images presented a large residue with successive tumor growth (E, F).