RT Journal Article SR Electronic T1 Sphenoid Sinus Osteoma at the Sella Turcica Associated with Empty Sella: CT and MR Imaging Findings JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 550 OP 551 DO 10.3174/ajnr.A0935 VO 29 IS 3 A1 Chen, C.Y. A1 Ying, S.H. A1 Yao, M.S. A1 Chiu, W.T. A1 Chan, W.P. YR 2008 UL http://www.ajnr.org/content/29/3/550.abstract AB SUMMARY: A 50-year-old woman presented with intermittent headache for the past few years. A paranasal sinus CT scan showed a diffusely calcified lesion at the roof of the sphenoid sinus and sella turcica, with the sellar floor bony cortex involved. Empty sella was noted. MR imaging revealed a soft-tissue lesion with low signal intensity on T1-weighted images, high signal intensity on T2-weighted images, and heterogeneous enhancement on postgadolinium images. Histologic examination revealed an osteoma composed of mature lamellar bone.