TY - JOUR 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. SP - 550 LP - 551 DO - 10.3174/ajnr.A0935 VL - 29 IS - 3 AU - C.Y. Chen AU - S.H. Ying AU - M.S. Yao AU - W.T. Chiu AU - W.P. Chan Y1 - 2008/03/01 UR - http://www.ajnr.org/content/29/3/550.abstract N2 - 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. ER -