Chondromyxoid Fibroma of the Ethmoid Sinus
Abstract
A 43-year old Black female complained of sinus pressure and was found to have a mass of the right ethmoid sinus. A T1-weighted fat-suppressed (FS) post-clear coronal magnetic resonance imaging (MRI) study revealed right mid-level ethmoid air cells that were expanding the sinus cavity. A slightly lower density signal compared to brain was noted, at 35 Hounsfield units, and was found to be isointense with skeletal muscle. Notably, this coronal image showed that the mass was not descending from the cranial compartment, thereby effectively ruling out an encephalocele. A T1 axial FS MRI showed bone remodeling as the tumor had eroded through the lamina papyracea at the medial wall of the orbit. A fluid attenuated inversion recovery MRI indicated the absence of bright signals to indicate hemoglobin, necrosis, calcification, or proteinaceous debris. No edema was noted in the medial rectus muscle and no infiltration of fat of the orbit was identified, suggesting a non-aggressive nature to this lesion.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2011
- Accession Number
- ADA545828
Entities
People
- James T. Castle
- Mikelle L. Kernig