system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
The most common cause of bronchopulmonary aspergillosis is
assistant
The correct answer is  Aspergillus fumigatus is responsible for most cases of invasive aspergillosis including bronchopulmonary aspergillosis,almost all cases of chronic aspergillosis,and most allergic syndromes.A.flavus is more prevalent in some hospitals and causes a higher propoion of cases of sinus and cutaneous infections and keratitis than A.fumigatus.A.Niger can cause invasive infection, but more commonly colonizes the respiratory tract and causes external otitis.A.terreus causes only invasive disease,usually with a poor prognosis.A.nidulans occasionally causes invasive infection,primarily in patients with chronic granulomatous disease. Reference:Harrison's medicine-18th edition,page no:1655.