A resected case of ruptured mature teratoma growing into the right thoracic cavity

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  • Toda Hiroshi
    Department of Thoracic and Breast Surgery, Akita Kousei Medical Center
  • Kimura Yoshihiko
    Department of Thoracic and Breast Surgery, Akita Kousei Medical Center

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  • 右胸腔内に有茎性に発育・穿破した縦隔成熟奇形腫の1切除例

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Abstract

<p>The patient was a 56-year-old woman who visited her previous clinic with complaints of wheezing and right chest and back pain. Massive right pleural effusion was noted on a chest radiograph, and she was transferred to our hospital, after which chest drainage was started. Chest computed tomography (CT) showed an irregularly enhanced tumor of 9 cm in diameter in the right thoracic cavity, which was suspected of being primary lung cancer. However, pleural effusion cytology did not reveal any evidence of malignancy. There was no elevation of tumor markers, but an abnormally high amylase level was noted in the pleural fluid. An operation was performed for diagnostic purposes, with amylase-producing lung cancer in mind. Severe intrathoracic adhesions were observed, and further dissection revealed a pedunculated tumor with mixed solid and cystic components from the anterior mediastinum into the right thoracic cavity. The tumor was completely resected and diagnosed as a mature teratoma both by intraoperative rapid examination and histopathological findings of the permanent specimen.</p><p>Although there are many reports of mature teratoma with intrathoracic perforation, a case of intrathoracic perforation with pedunculated growth has never been published, and so the present case is considered to be extremely rare.</p>

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