Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
CASE REPORTS
Spontaneous Rupture of Idiopathic Thymic Abscess with a Markedly Increased CA-125 Level
Jong-Chun NahBora LeeCheol-Hoon KwakSeong Beom KimSang Min KimSung-Won ParkYun Kyung KangHye-Kyung LeeBon-Il KuJung-Ju SirWook-Hyun ChoSuk-Koo Choi
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JOURNALS OPEN ACCESS

2008 Volume 47 Issue 10 Pages 953-956

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Abstract

We report a rare case of spontaneous rupture of idiopathic thymic abscess into the pleural cavity. A 64-year-old woman was admitted to hospital with pleuritic retrosternal chest pain. Chest roentgenograms disclosed a small amount of bilateral pleural effusion, the examination of which exposed a sterile serous exudate with a markedly increased CA-125 level. Chest computed tomography revealed a large anterior mediastinal cystic mass with bilateral pleural effusions. Following complete resection of the mass, the histological examination revealed cavitary lesion with necrotic thymic tissue and inflammatory infiltrate surrounded by fibrous wall. The immunohistochemical staining for CA-125 displayed strong positivity at the Hassall's corpuscles. Cyst fluid also revealed a highly elevated CA-125 level. Her serum CA-125 concentration two months after surgery had fallen to 28 IU/L. She is now doing well without recurrence of the cyst five months after surgery.

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© 2008 by The Japanese Society of Internal Medicine
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