Acta Medica Okayama 74巻 5号
2020-10 発行
Miura, Akihiro
Department of General Thoracic Surgery and Breast and Endocrinological Surgery, Okayama University Hospital
Shien, Kazuhiko
Department of General Thoracic Surgery and Breast and Endocrinological Surgery, Okayama University Hospital
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Toji, Tomohiro
Department of Pathology, Okayama University Hospital
Otani, Shinji
Department of General Thoracic Surgery and Breast and Endocrinological Surgery, Okayama University Hospital
Yamamoto, Hiromasa
Department of General Thoracic Surgery and Breast and Endocrinological Surgery, Okayama University Hospital
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Okazaki, Mikio
Department of General Thoracic Surgery and Breast and Endocrinological Surgery, Okayama University Hospital
Sugimoto, Seiichiro
Department of General Thoracic Surgery and Breast and Endocrinological Surgery, Okayama University Hospital
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Soh, Junichi
Department of General Thoracic Surgery and Breast and Endocrinological Surgery, Okayama University Hospital
Yamane, Masaomi
Department of General Thoracic Surgery and Breast and Endocrinological Surgery, Okayama University Hospital
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Toyooka, Shinichi
Department of General Thoracic Surgery and Breast and Endocrinological Surgery, Okayama University Hospital
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We encountered a rare case of thymic cyst accompanied by mediastinitis. A 39-year-old Japanese male presented with fever and chest pain. The chest CT revealed a mass composed of a lobular cystic lesion with inflammation, suggesting the onset of mediastinitis. A definitive histological diagnosis was not obtained, and we performed a thymectomy. Pathologically, the thymic cyst was accompanied by multiple cavities, mimicking thymic cysts, caused by the inflammatory abscess. The surrounding adipose tissue showed inflammatory cell infiltrations with chronic fibrosis. These findings indicate that clinicians should be aware that thymic cysts may cause severe mediastinitis.