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The Journal of Thoracic and Cardiovascular Surgery, Vol 81, 741-746, Copyright © 1981 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association
EE Lack
Two cases of massive thymic hyperplasia (MTH) are reported in boys 11 and
14 years of age. Each was detected on routine chest roentgenogram as a
large anterior mediastinal mass. Total thymectomy was successfully
performed and the two patients were alive and well 9 and 17 years later.
The thymectomy specimens weighed 324 and 490 gm, respectively, and had
uniform histologic anatomy without lymphoid nodules. Morphometric study
documented the massive increase in thymic parenchyma (i.e., true
hyperplasia) with retention of a normal proportion of connective tissue
expected for age. Since thymic size and structure normally become modified
with age, it is essential to consult standard reference data when
evaluating hypertrophy and hyperplasia. Gross and histologic features
distinguishing MTH from childhood thymoma are discussed.
ARTICLES
Thymic hyperplasia with massive enlargement: report of two cases with review of diagnostic criteria
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L.A. Parker, G. Gaisie, and J.H. Scatliff Computerized Tomography and Ultrasonographic Findings in Massive Thymic Hyperplasia: Case Discussion and Review of Current Concepts Clinical Pediatrics, February 1, 1985; 24(2): 90 - 94. [Abstract] [PDF] |
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