A 62-year old smoker and alcoholic woman with chronic obstructive lung disease was admitted for suppurative pneumonia with cavitation and developed an intracavitary aspergilloma less than 2 months after the first signs of pneumonia. In view of the short time elapsed between the aspergilloma and the onset of suppurative pneumonia, 2 possibilities are discussed: either an aspergilloma developed unusually early in the cavity of a recent pulmonary abscess, or the patient had a chronic necrotizing pulmonary aspergillosis diagnosed at an early stage, which would account for all the manifestations observed.