Magnetic resonance imaging fluid-attenuated inversion recovery sequence signal reduction after endoscopic endonasal transcribiform total resection of XXXX .

@entity1545 @entity1 @entity75 @entity4 @entity5219 @entity5 @entity1653 @entity358
BACKGROUND: @entity1653 grow insidiously and compress adjacent cerebral structures. Achieving complete removal without further @entity75 can be difficult. Microsurgical removal of large lesions is a challenging procedure and usually involves some brain retraction. The endoscopic endonasal approaches (EEAs) for @entity5 arising from the anterior fossa have been well described; however, their effect on the adjacent brain tissue has not. Herein, the authors utilized the magnetic resonance imaging fluid attenuated inversion recovery (FLAIR) sequence signal as a marker for @entity4 and @entity5219 on pre- and post-operative images of @entity1653 , thus presenting an objective parameter for @entity1545 after surgical manipulation. METHODS: Imaging of 18 @entity1653 removed through EEAs was reviewed. @entity5 and pre/postoperative FLAIR signal volumes were assessed utilizing the DICOM image viewer OsiriX(  ). Inclusion criteria were: (1) No previous treatment; (2) EEA gross total removal; (3) no further treatment. RESULTS: There were 14 females and 4 males; the average age was 53.8 years (  8.85 years). Average @entity5 volume was 24.75 cm(3) (  23.26 cm(3), range 2.8-75.7 cm(3)), average preoperative FLAIR volume 31.17 cm(3) (  39.38 cm(3), range 0-127.5 cm(3)) and average postoperative change volume, 4.16 cm(3) (  6.18 cm(3), range 0-22.2 cm(3)). Average time of postoperative scanning was 6 months (range 0.14-20 months). In all cases (100%) gross total @entity5 removal was achieved. Nine @entity1 (50%) had no postoperative FLAIR changes. In 2 @entity1 (9%) there was minimal increase of changes postoperatively (2.2 cm(3) and 6 cm(3) respectively); all others demonstrated image improvement. The most common complication was postoperative cerebrospinal fluid leakage (27.8%); 1 @entity1 (5.5%) died due to systemic complications and @entity358 . CONCLUSIONS: FLAIR signal changes tend to resolve after @entity5 resection and do not seem to worsen with this operative technique.
