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Case Reports
. 2015 Apr 22;12(2):e8276.
doi: 10.5812/iranjradiol.8276. eCollection 2015 Apr.

Ultrasound, CT and MRI Appearances of a Rare Symptomatic Laryngeal Chondrometaplasia: A Case Report

Free PMC article
Case Reports

Ultrasound, CT and MRI Appearances of a Rare Symptomatic Laryngeal Chondrometaplasia: A Case Report

Ryan Ka Lok Lee et al. Iran J Radiol. .
Free PMC article


Symptomatic laryngeal chondrometaplasia is rare. To the best of our knowledge, there are only few case reports on laryngeal chondrometaplasia. The imaging appearance of this uncommon disease is even more rarely described. There are only two case reports describing its appearances in computed tomography (CT) and magnetic resonance imaging (MRI). Ultrasound (US) features have not been reported so far. This case report is to show the US, CT and MRI features of this disease entity to stress the role of imaging in this disease.

Keywords: Chondromatosis; MRI; Ultrasonography.


Figure 1.
Figure 1.. A 41-year-old woman who had intermittent hoarseness for one year. A, Axial T2-weighted MRI of the larynx with fat suppression technique reveals a T2-weighted hyperintense lesion (white arrow) within the lamina of the right thyroid cartilage (white open arrows). B, Axial T1-weighted MRI of the larynx shows that the lesion is T1-weighted hypointense (white arrow). Consecutive three slices of axial T1-weighted MRI of the larynx after gadolinium injection shows that the lesion (white arrows) extends from the thyroid cartilage (C), passes through the paraglottic fat space (D) and protrudes into the laryngeal lumen at the level of the false cord (E). A similar but smaller lesion is present within the lamina of the left thyroid cartilage.
Figure 2.
Figure 2.. The corresponding axial non-contrast CT scan shows that the lesion is well-defined and hypodense. It is within the lamina of the right thyroid cartilage (white arrow). No chondroid matrix or calcification/ossification is present. There is a mild mass effect associated with displacement of the adjacent neck muscle and laryngeal mucosa but no invasion is visible. The open arrow shows the normal thyroid cartilage.
Figure 3.
Figure 3.. Axial grey-scale sonography (A) reveals homogeneous hypoechoic lesion within the right thyroid cartilage. No cystic change or calcification is identified. Power Doppler sonography (B) shows marked internal vascularity of the lesion.

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