A three year old female German Shephard dog was examined because of ac
ute dyspnoe and hemoptysis. Endoskopic examination revealed blood in t
he left cranial lobus. Thoracic radiography showed a bullous emphysema
. The dog was brought to death and the heart, the lung and mediastinum
were examined pathological-anatomically and pathological-histological
ly. The pathologic-histological examination of the cyst revealed septa
te hyphae with 45 degrees-branching, characteristic of Aspergillus sp.