FIG 5. Immediate MR scan following surgery confirmed residual tumor in a 27-year-old woman with growth hormone-secreting tumor.

A, Preoperative image of the sella (TR/TE/excitations = 550/12/2) shows pituitary tumor in the inferior portion of the pituitary gland (white arrow).

B and C, Immediate 1-day postoperative image before and after contrast medium infusion (400/14/1) shows pituitary mass composed of fat and nodular enhancing tissue (arrowhead).

D, A second operation was performed to remove the residual tumor, and this scan (400/14/1) was performed 2 days following surgery.

E, After contrast medium infusion, there is no abnormal enhancing lesion in this area (550/12/2).