Art and Science of Laboratory Medicine

Art and Science of Laboratory Medicine

Monday, April 21, 2014

TB or not TB?

A 56-year-old man diagnosed as having acquired immunodeficiency syndrome was admitted to a hospital with fever, progressive cachexia, and multiple skin lesions. He complained of a cough productive of yellow sputum but no hemoptysis. An erythematous fluctuant mass located on the right thigh was aspirated, yielding purulent fluid. A Gram stain of this fluid revealed an abundance of leukocytes but no bacteria. Numerous unstained bacillus footprints or ghost bacilli were noted (figure).

Read more:
Ghost mycobacteria on Gram stain


Source: Journal of Clinical Microbiology

1 comment:

Ryan Hopprich said...

Are they refractile rods?

If more specimen available, do a ZN.

If the specimen was cultured, keep the plates for 7 days.

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