Fig. 3

(A) and (B) Before the third frontal craniotomy, the MRI in October 2014 demonstrated a rapid enlargement of the tumor with suprasellar extension and encasing the right ICA. (C) and (D) After the third craniotomy, the tumor was subtotally removed. (E) and (F) Before the fourth frontal craniotomy, MRI in January 2015 reported that the tumor volume increased significantly and compressed the optic chiasm. (G) and (H) After the fourth craniotomy, the tumor was subtotally resected. (I) and (J) MRI of the lumbar spine indicated an intradural extramedullary mass at the level of the fourth lumbar vertebra. (K) and (L) Postoperative MRI indicated that the intradural extramedullary lesions were completely resected