• Akira Baba, Ryo Kurokawa, Mariko Kurokawa, Yoshiaki Ota, Remy Lobo, and Ashok Srinivasan.
• Division of Neuroradiology, Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA.
• J Neuroimaging. 2022 Mar 1; 32 (2): 213-222.

Background And PurposeTo comprehensively summarize the characteristics of radiological findings of laryngeal conventional chondrosarcomas.MethodsWe included patients with pathologically proven laryngeal conventional chondrosarcomas with CT and /or MRI, including 41 cases from 31 publications recruited after a systematic review and 14 cases from our institution. Two board-certified radiologists reviewed and evaluated all the radiological images. The relationship between pathological grade and radiological findings was analyzed.ResultsThe median long diameter of the lesion was 3.1 cm (range, 1.5-8.5 cm). The most common location was the cricoid (74.5%), followed by the thyroid (12.7%), cricoid and thyroid (7.3%), and arytenoid (5.5%). All lesions showed well-defined margins. Cortical defect/expansion (98.0%), internal low density (89.6%), and calcification (95.8%) with homogeneous and scarce contrast enhancement on contrast-enhanced CT (85.3%) were frequently observed. All cases showed high signal on T2-weighted imaging, low signal on T1-weighted imaging (T1WI), and heterogeneous and mild contrast enhancement on postcontrast T1WI. No significant differences were found between the pathological grades and radiological findings.ConclusionsIn our summary of comprehensive CT and MRI findings of laryngeal conventional chondrosarcomas, we found that the knowledge of these radiological features may facilitate prompt diagnosis and appropriate management.© 2022 American Society of Neuroimaging.

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