Pneumocystis of Lung - Low Power

Eosinophilic, frothy material, a combination of pneumocystis organisms and plasma constituents, is present in many of the alveolar spaces. The characteristic morphology of the organism is demonstrated in the inset; a Gomori Methenamine Silver stain highlights the wall and central body of the organism. This histologic picture is from a transbronchial biopsy. What other types of specimens are typically used to detect pneumocystis? ANSWER

Is this patient's course typical for an HIV infected patient? ANSWER

What is the significance of the falling CD4 counts in this patient? ANSWER

How is the clinical laboratory evaluation used to help diagnose HIV infection? ANSWER

Alveolar Septa

Frothy Material

Pneumocystis

Central Body