SummaryA case of pulmonary aspergillosis is described. Clinical and pathological findings are reported. Besides the pulmonary lesions, endocarditis of the aortic valves had been diagnosed in this patient, a man 43 years old. Post mortem examination showed perforation of one of the aortic valves which was responsible of severe cardiac failure observed just, before death.The pulmonary disease looked as pseudo tuberculosis of the lungs.The authors discuss the primary origin of the pulmonary disease. Microscopic findings are described and illustrated abundantly.