RT Journal Article SR Electronic T1 Bilateral Dystrophic Ossification of the Thyroid Cartilage Appearing as Symmetrical Laryngeal Masses JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1339 OP 1341 VO 26 IS 6 A1 J. Galline A1 K. Marsot-Dupuch A1 P. Bigel A1 P. Lasjaunias YR 2005 UL http://www.ajnr.org/content/26/6/1339.abstract AB Summary: Primary cartilaginous lesions of the larynx are relatively uncommon. We present a case of bilaterally pseudocystic lesion of the thyroid cartilage that demonstrated progressive calcification. Pathologic analysis showed features suggesting a dystrophic lesion with no evidence of malignancy. We hypothesize that repetitive microtrauma related to muscular overuse probably led to inflammatory changes at tendinous insertions on the laryngeal cartilage and resulted in dystrophic ossification of the laryngeal cartilage.