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P402: THE UTILITY OF CEREBROSPINAL FLUID DIVERSION IN ENDOSCOPIC ENDONASAL PITUITARY MACROADENOMA RESECTION: A REPRESENTATIVE OPERATIVE VIDEO
James C Mamaril-Davis¹; Ryan Juncker²; Mark Damante¹; Santino Cua¹; Kara A Parikh¹; Kyle K VanKoevering¹; Ricardo L Carrau¹; Albert Sufianov³; Daniel M Prevedello¹; Kyle C Wu¹; ¹The Ohio State University Wexner Medical Center; ²The Ohio State University College of Medicine; ³Federal Center of Neurosurgery Tyumen

We present the case of a 58-year-old male who presented with a large, 2.6 x 2.2 x 3.0 cm pituitary macroadenoma invading the left cavernous sinus and compressing the optic chiasm. Traditionally, reliance on tumor descent may lead to residual tumor hiding within the redundant diaphragma sellae. To prevent collapse of the surgical cavity walls in large adenomas, classic cerebrospinal fluid diversion techniques such as mannitol can maximize endoscopic visualization of the surgical cavity.

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