USMLE Forum Archives - USMLE Step 1 - lym2
lym2
babbu5508 - 04-30-11 23:38
Acid fast and Grocott silver stain performed on the biopsy are negative. Which of the following is the most likely diagnosis?
/ A. Aspergillosis
/ B. Candidiasis
/ C. Histoplasmosis
/ D. Sarcoidosis
/ E. Tuberculosis
babbu5508 - 04-30-11 23:38
Acid fast and Grocott silver stain performed on the biopsy are negative. Which of the following is the most likely diagnosis?
/ A. Aspergillosis
/ B. Candidiasis
/ C. Histoplasmosis
/ D. Sarcoidosis
/ E. Tuberculosis
The correct answer and explanation will be available after you answer.
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#5
Re: lym2 theonlymehul - 05-10-11 06:32 My answer is: d.
silver stain used for fungal,all but D and E are silver stain -ve,but E is acid fast +ve.
#8
Re: lym2
babbu5508 - 05-15-11 01:31 My answer is: d.
The correct answer is D. Acid fast stains are used to identify mycobacteria, and the Grocott silver stain is used to identify fungal organisms. The combination of non-caseating granulomas and negative stains for mycobacteria and fungi is most consistent with sarcoidosis.
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