Accession Number:

ADA545828

Title:

Chondromyxoid Fibroma of the Ethmoid Sinus

Descriptive Note:

Journal article

Corporate Author:

NAVAL GRADUATE DENTAL SCHOOL BETHESDA MD

Personal Author(s):

Report Date:

2011-06-01

Pagination or Media Count:

7.0

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.

Subject Categories:

  • Medicine and Medical Research

Distribution Statement:

APPROVED FOR PUBLIC RELEASE