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Comprehensive radiological features of laryngeal sarcoidosis: cases series and systematic review

  • Head-Neck-ENT Radiology
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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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Acknowledgements

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Funding

No funding was received for this study.

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Authors and Affiliations

Authors

Contributions

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.

Corresponding author

Correspondence to Akira Baba.

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We obtained our institutional review board approval for including cases to this systematic review study and performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.

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Informed consent was waived of due to the retrospective nature of the study.

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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

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