Clinical History 46-year-old female patient with the chief complaint of headache.   Imaging Findings CT Findings (Paranasal Sinus): Well-defined area in the sphenoid sinus. Contains fat density foci and small punctate calcifications. No aeration in this region; the rest of the sinus is patent. No bone expansion, cortical thinning, or destruction.   MR Findings: T1: Central iso- to mildly hyperintense, consistent with fat content. T2: Central iso- to mildly hyperintense, with