FIG 4. Combined enhancement of early postoperative sella in a 60-year-old man with nonfunctioning tumor.

A, Preoperative image of the sella (TR/TE/excitations = 600/16/1) shows pituitary tumor with suprasellar extension.

B, Immediate 1-day postoperative image before contrast infusion (400/14/1) shows pituitary mass composed of fat (white arrow) and hemorrhage (black arrow) at the operative site.

C, After contrast infusion, there are nodular enhancing regions (arrows) at both lateral portions of the postoperative pituitary mass with peripheral enhancing rim.

D, After 6 months, residual tumor was seen with increase in tumor size (550/12/2).