L72

MEDIASTINAL LYMPH NODES - Sarcoidosis

Description
This specimen consists of the mediastinal structures, including trachea, aortic arch and part of each pulmonary artery. The mediastinal lymph nodes are markedly enlarged but remain discrete.
History
The patient was a 51-year-old woman with a history of asthma who apparently died suddenly without medical attention. At autopsy, the left chest was obliterated by old adhesions and the apex of the right lower lobe was adherent to the chest wall. Microscopy of the lung and mediastinal lymph nodes showed non-caseating granulomas consistent with sarcoidosis. Her heart was enlarged weighing 740 grams, and microscopy of the heart showed myocardial lesions suggestive of acute rheumatic carditis rather than sarcoidosis. The liver and spleen showed changes of venous congestion. Death was ascribed to rheumatic heart disease and the finding of sarcoidosis was regarded as incidental.