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Intern Med. 2015;54(19):2487-9. doi: 10.2169/internalmedicine.54.4622. Epub 2015 Oct 1.

Life-threatening and Rapidly Growing Teratoma in the Anterior Mediastinum.

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1
Department of Internal Medicine, National Hospital Organization Kinki-chuo Chest Medical Center, Japan.

Abstract

This report describes the case of a 23-year-old man with a mediastinal teratoma. Five months before admission, a chest radiograph during a routine health checkup was normal. Four months before admission, the patient developed sudden onset of mild right-sided chest pain. He gradually developed dyspnea and was admitted to our hospital. Computed tomography revealed a giant tumor that was markedly compressing the right atrium. Urgent surgery was performed, and a ruptured, benign mature teratoma was diagnosed. Mature mediastinal teratomas are benign tumors, but they can rupture and have the potential to grow rapidly, potentially leading to life-threatening complications.

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