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Radiology, Vol 167, 647-651, Copyright © 1988 by Radiological Society of North America

ARTICLES

Hodgkin disease: CT of the thymus

CW Heron, JE Husband and MP Williams
Royal Marsden Hospital, Department of Radiology, Sutton, Surrey, U.K.

The computed tomography (CT) scans in two groups of patients with Hodgkin disease were reviewed to determine the frequency of thymic enlargement. In 50 CT scans from 50 patients with evidence of thoracic disease on CT scans who were examined for primary staging, the thymus was enlarged in 15 of 50 (30%). Fifty CT scans were obtained from 44 patients at the time of 50 separate episodes of known or suspected relapse. Relapse occurred in the mediastinum in 12 episodes, lung parenchyma in five, and both sites in one. Thymic enlargement thought to be due to involvement by disease was present in seven of 18 (38%). Mediastinal disease was associated with thymic enlargement in all but one patient in whom a thymic cyst developed after radiation therapy. Differentiation of thymic enlargement from enlarged superior mediastinal lymph nodes was easily made in all but two patients. Thymic enlargement in the absence of lymph node enlargement may indicate a different disease, since isolated Hodgkin disease of the thymus is uncommon. Primary thymic tumor should be considered initially, whereas after treatment, rebound hyperplasia of the thymus may be the cause of enlargement.


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A. Guermazi, P. Brice, E. de Kerviler, C. Ferme, C. Hennequin, V. Meignin, and J. Frija
Extranodal Hodgkin Disease: Spectrum of Disease
RadioGraphics, January 1, 2001; 21(1): 161 - 179.
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