Abstract
Purpose
To comprehensively summarize the characteristic radiological findings of laryngeal sarcoidosis.
Methods
We reviewed patients with laryngeal sarcoidosis who underwent computed tomography (CT) and/or magnetic resonance imaging (MRI) and included 8 cases from 8 publications that were found through a systematic review and 6 cases from our institutions. Two board-certified radiologists reviewed and evaluated the radiological images.
Results
Almost all cases exhibited supraglottic lesions 13/14 (92.9%) and most of them involved aryepiglottic folds (12/13, 92.3%), epiglottis (11/14, 78.6%), and arytenoid region (10/14, 71.4%). Most lesions were bilateral (12/14, 85.7%). All cases showed well-defined margins and a diffuse swelling appearance (14/14, 100%). Non-contrast CT revealed a low density (4/5, 80%). The contrast-enhanced CT showed a slight patchy enhancement predominantly at the margin of the lesion in most cases (12/13, 92.3%). In one case, T2-weighted images showed high signal intensity peripherally and low signal intensity centrally (1/1, 100%). Gadolinium-enhanced MRI showed moderate heterogeneous enhancement predominantly at the margin of the lesion (2/2, 100%). In one case, diffusion-weighted imaging showed intermediate signal intensity; the apparent diffusion coefficient value was 2.4 × 10−3 mm2/s. The larynx was the only region affected by sarcoidosis in 57.1% (8/14) of the cases. Involvement of the neck lymph nodes and distant organs was observed in 4/14 (28.6%) patients, respectively.
Conclusion
We summarized the CT and MRI findings of patients with laryngeal sarcoidosis. Knowledge of these characteristics is expected to facilitate prompt diagnosis and appropriate management.
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Conceptualization: Akira Baba, Ryo Kurokawa, Mariko Kurokawa; data curation: Akira Baba, Takeshi Fukuda, Matsusato Tsuyumu, Ryo Kurokawa, Mariko Kurokawa; methodology: Akira Baba, Ryo Kurokawa, Mariko Kurokawa; formal analysis and investigation: Akira Baba, Ryo Kurokawa, Mariko Kurokawa; writing—original draft preparation: Akira Baba; writing—review and editing: Akira Baba, Ryo Kurokawa, Takeshi Fukuda, Mariko Kurokawa, Matsusato Tsuyumu, Yoshiaki Ota, Hideomi Yamauchi, Hiroya Ojiri, Ashok Srinivasan; resources: Ashok Srinivasan.
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Baba, A., Kurokawa, R., Fukuda, T. et al. Comprehensive radiological features of laryngeal sarcoidosis: cases series and systematic review. Neuroradiology 64, 1239–1248 (2022). https://doi.org/10.1007/s00234-022-02922-z
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DOI: https://doi.org/10.1007/s00234-022-02922-z