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November 12, 2013 -  Question 5 | by Pathology Outlines
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November 12, 2013 - Question 5

A 67 year old male with a history of asthma presents to his primary care physician with dyspnea. A chest X-ray is performed which shows an ill-defined mass in the lower lobe of the left lung. Fine needle aspiration of the mass is performed, and H&E-stained and Gomori methenamine silver-stained images of the cell block preparation are shown. Gram and acid-fast stains were negative. The organism seen in the images is most likely to be:

 

a. Pneumocystis jiroveci

b. Aspergillus fumigatus

c. Histoplasma capsulatum

d. Coccidioides immitis

e. Blastomyces dermatitidis

 

Check answer here.

 

Source: BoardVitals, 11/12/2013

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Uploaded on November 14, 2013