The Journal of the Japanese Association for Chest Surgery
Online ISSN : 1881-4158
Print ISSN : 0919-0945
ISSN-L : 0919-0945
A case of spontaneous thymic hemorrhage
Kazunori IwataniMasakazu Yoshioka
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2015 Volume 29 Issue 7 Pages 852-855


A 50-year-old man was admitted to our emergency room due to sudden-onset chest pain. Enhanced CT revealed left-sided pleural effusion, indentified as hemothorax by thoracentesis, showing a 7×5-cm mass-like lesion with extravasation of contrast media in the anterior mediastinum and isodense regions around the lesion. Because of the suspicion of a ruptured mediastinal tumor, we performed a median sternotomy. The thymic parenchyma was distended due to the hemorrhage. A total of 2,170 grams of clotted blood was evacuated from the anterior mediastinum and left pleural cavity. We performed thymectomy. Both gross pathological and histological findings revealed a swollen hematomatous thymus without a neoplastic lesion. There were no abnormal findings on a chest radiograph obtained 2 months before the operation. Therefore, we diagnosed him with spontaneous thymic hemorrhage. To our knowledge, only three adult cases have been reported.

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© 2015 The Japanese Association for Chest Surgery
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