Sinus pneumatization is a complex variable process that begins in early life and continues for many years. We present a case of a 6-year-old boy with progressive headaches and neurologic symptoms suggestive of intracranial pathology. The presence of enhancing tissue within the sphenoid sinus created a diagnostic dilemma which leads to a transsphenoidal biopsy. https://www.roneverhart.com/Toshiba-MG09-MG09ACA18TE-18TB-7-2K-RPM-SATA-6Gb-s-512e-3-5in-Refurbished-HDD/