Sphenoid Sinus Osteoma at the Sella Turcica Associated with Empty Sella: CT and MR Imaging Findings: Fig 1.

C.Y Chen,W.P Chan,S.H Ying,M.S Yao,W.T Chiu

doi:10.3174/ajnr.a0935

Abstract

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.

Highlights

MR imaging (1.5T, Horizon LX; GE Healthcare, Milwaukee, Wis) was performed and showed a soft-tissue lesion, measuring 0.8 ϫ 1.7 ϫ 1.9 cm, at the sella turcica floor and the roof of the sphenoid sinus
Sphenoid sinus osteoma in the sella associated with empty sella, to our knowledge, has not been reported
We present such a case, a 50-year-old woman, with CT and MR imaging findings

Summary

Introduction

MR imaging (1.5T, Horizon LX; GE Healthcare, Milwaukee, Wis) was performed and showed a soft-tissue lesion, measuring 0.8 ϫ 1.7 ϫ 1.9 cm, at the sella turcica floor and the roof of the sphenoid sinus. Our initial diagnosis was a pituitary adenoma invading the sellar floor and sphenoid sinus, associated with empty sella.

Results

Conclusion