CT appearance of lunate trachea
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L Lomasney1, C J Bergin, J Lomasney
1Department of Radiology, Duke University Medical Center, Durham, NC 27710.
Journal of Computer Assisted Tomography
|May 1, 1989
Abstract:
Computed tomography provides excellent visualization of the trachea, but there have been only limited descriptions of variations in tracheal shape. The normal tracheal cartilage is U shaped. Lunate shaped trachea is uncommon and is characterized by a coronal/sagittal diameter ratio (tracheal index) greater than 1. We present the CT appearance of a lunate shaped trachea with corresponding pathologic sections. Destruction of the membranous septum caused marked increase in the tracheal index in this patient.