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FIG 2. Peripheral enhancement of an early postoperative sella in a 35-year-old man with nonfunctioning tumor.
A, Preoperative image of the sella (TR/TE/excitations = 700/12/2) shows pituitary tumor with suprasellar extension. Normal pituitary gland cannot be seen because of compression by the tumor.
B, Immediate 2-day postoperative image before contrast infusion (400/16/1) shows pituitary mass composed of fat and hemorrhage at the operative site.
C, After contrast infusion, there is a peripheral enhancing rim around the postoperative pituitary mass.
D, Immediate postoperative T2-weighted image (3500/95/2) shows hemorrhage as low signal intensity suggesting intracellular deoxyhemoglobin.
E, After 6 months, the hemorrhage is totally absorbed (500/9/2).
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