Abstract
Bilateral hilar and mediastinal lymphadenopathy was observed in a 32-year-old man who had been engaged in asbestos spraying for 16 years. Lymph nodes obtained from Daniel's biopsy revealed tissue reaction compatible with sarcoidosis. On the other hand, a large number of asbestos particles were detected in the lung tissue from transbronchial lung biopsy and in bronchoalveolar lavage fluid, but no epithelioid granuloma was observed in the lung tissue. Various immunoserological findings such as PPD skin test, serum angiotensin converting enzyme activity, serum beta-glucuronidase and lysozyme level, serum antinuclear antibody, lymphocyte subset of blood and bronchoalveolar lavage fluid were inconsistent with sarcoidosis. However, lymph node enlargement and immunological abnormalities in this patient may be related to asbestos exposure and may not have occurred merely by chance.
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