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.bekindtopets.com/hot-mega-Allflex-840-USDA-HDX-EID-Tags-20-Bag-save-big/