Pulmonary Pathology, Set 4

For each of the following clinical histories, match the most closely related infectious organism involving the respiratory tract:

1. A 56-year-old man has developed profound neutropenia following chemotherapy for leukemia. He develops a cough with fever. A chest radiograph reveals multiple 1 to 2 cm nodules scattered throughout all lung fields. A bronchoalveolar lavage yields a sample that on cytologic smear has numerous septate, branching hyphae:

2. A 51-year-old man has a three month history of fever, night sweats, and weight loss. In the past month he experienced episodes of hemoptysis. A chest radiograph reveals bilateral upper lobe cavitations. His HIV test is negative. He does not have a history of prior pulmonary disease:

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A. Aspergillus fumigatus B. Blastomyces dermatitidis C. Candida albicans D. Coccidioides immitis
E. Cryptococcus neoformans F. Cytomegalovirus G. Histoplasma capsulatum H. Influenza A
I. Legionella pneumophila J. Mycobacterium tuberculosis K. Mycoplasma pneumoniae L. Nocardia braziliensis asteroidies
M. Pneumocystis carinii (jirovecii) N. Respiratory syncytial virus O. Staphylococcus aureus P. Streptococcus pneumoniae