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Five Cases of Thymic Hyperplasia

Journal of the Korean Pediatric Society 1992;35(10):1435-1442.
Published online October 15, 1992.
Five Cases of Thymic Hyperplasia
Soo Kyoung Lee, Soo Young Lee, Kyu Eun Kim, Byung Ju Chung, Ki Young Lee
Department of Pediatrics, Yon Sei University, College of Medicine, Seoul, Korea
흉선비대(Thymic Hyperplasia) 5례
이수경, 이수영, 김규언, 정병주, 이기영
연세대학교 의과대학 소아과학교실
Diagnosis of thymic hyperplasia may be quite difficult because thymus has not always sail appearance and it sometimes appears to be a huge mass in the mediastinum. This fact causes sometimes diagnostic thoracotomy or often make primary physicians fail in treatment and transfer their patients to other hospitals. But in most cases diagnosis can be made by a lateral chest X-ray and lung tomography as in our cases. Additional computed tomography or ultrasonography confirms diagnosis, remarkable reduction in size of thymus after administration of a few day's corticosteroid has some diagnostic value. We experienced thymic hyperplasia in five infants whose chief complaints were chronic respiratory symptoms and mediastinal mass shadows on the chest roentgenograms and diagnosed by nonoperative methods such as lung tomogram, chest ultrasonogram, chest CT scan and short term administration of corticosteroid.
Key Words: Thymic hyperplasia, Lung tomography, Computed tomography

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