Abstract
Intraoperative distinction of pituitary adenoma from normal gland is critical in maximizing tumor resection without compromising pituitary function. Contact endoscopy provides a noninvasive technique that allows for real-time in vivo visualization of differences in tissue vascularity. Two illustrative cases of endoscopic endonasal approaches (EEAs) for resection of pituitary adenoma illustrate the use of contact endoscopy in identifying tumor from gland and differentiating a thin section of normal gland draped over the underlying tumor, thereby allowing for safe extracapsular tumor resection. Contact endoscopy may be used as an adjunct for intraoperative, in vivo differentiation of pituitary gland and adenoma.The video can be found here: https://stream.cadmore.media/r10.3171/2021.10.FOCVID21199
Highlights
Intraoperative distinction of pituitary adenoma from normal gland is critical in maximizing tumor resection without compromising pituitary function
This is a video demonstrating a new concept using contact endoscopy to try to differentiate between normal pituitary gland and adenoma during endoscopic surgery
We took the same endoscope, which in this case was produced by the KARL STORZ company, and used it to try to look at pituitary tumors and adenoma.[5]
Summary
Intraoperative distinction of pituitary adenoma from normal gland is critical in maximizing tumor resection without compromising pituitary function. This is a video demonstrating a new concept using contact endoscopy to try to differentiate between normal pituitary gland and adenoma during endoscopic surgery. A normal pituitary gland typically demonstrates very classic microvascular pattern we can sometimes differentiate.[1,2] Using this over several cases, we started to gain an appreciation for the differentiation between normal gland and tumor.
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