垂体手术后的磁共振成像：经蝶窦切除术后的系列磁共振研究。
MR of the pituitary gland postsurgery: serial MR studies following transsphenoidal resection.
作者信息
Dina T S, Feaster S H, Laws E R, Davis D O
机构信息
Department of Radiology, George Washington University Medical Center, Washington, DC 20037.
出版信息
AJNR Am J Neuroradiol. 1993 May-Jun;14(3):763-9.
PURPOSE
To determine the MR appearance of the pituitary gland in the early and late postoperative periods in order to distinguish operative complications more effectively and to establish a postoperative baseline.
METHODS
Ten patients were prospectively studied with MR following transsphenoidal resection of a pituitary tumor. Early postoperative studies were obtained at 2 to 8 days following surgery, late studies at 4 to 9 months in all patients and also at 12 to 16 months in five. Major observations were height of the pituitary mass and appearance of the surgical packing.
RESULTS
Within 8 days following surgery, the height of the pituitary mass was unchanged in two cases, increased in three, and only minimally decreased in five. All decreased in height (average 54%) by 4 to 9 months. Gelfoam packing completely (five) or nearly completely (three) resorbed leaving a normal-size, although deformed, pituitary gland. Fat-packed resection defects persisted (two).
CONCLUSIONS
In the early postoperative period, the appearance of the pituitary gland is similar in size to its preoperative appearance. Subsequent involution with packing resorption yields a smaller, deformed pituitary gland.
目的
确定垂体瘤经蝶窦切除术后早期和晚期垂体的磁共振成像（MR）表现，以便更有效地鉴别手术并发症并建立术后基线。
方法
对10例垂体瘤经蝶窦切除术后的患者进行前瞻性MR研究。所有患者术后早期检查在术后2至8天进行，晚期检查在4至9个月进行，其中5例在12至16个月进行。主要观察指标为垂体肿块高度及手术填充物的表现。
结果
术后8天内，2例垂体肿块高度无变化，3例增加，5例仅轻微降低。至4至9个月时，所有病例肿块高度均降低（平均降低54%）。明胶海绵填充物完全吸收（5例）或几乎完全吸收（3例），垂体大小正常但形态异常。脂肪填充的切除缺损持续存在（2例）。
结论
术后早期，垂体外观大小与其术前相似。随后随着填充物吸收，垂体萎缩，体积变小且形态异常。
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