• Disease

    Pneumocystis jiroveci pneumonia

    AIDS (acquired immune deficiency syndrome) is caused by HIV (human immunodeficiency virus), and is a syndrome that leaves the body vulnerable to a host of life-threatening illnesses. There is no cure for AIDS, but treatment with antiviral medicine can suppress symptoms. AIDS is universally fatal, in large part due to the proliferation of opportunistic infections.

    Pneumocystis jiroveci pneumonia is a fungal infection of the lungs. The disease used to be called Pneumocystis carini or PCP pneumonia.

  • Disease

    Pneumonia - weakened immune system

    This picture shows the organism Pneumococci.  These bacteria are usually paired (diplococci) or appear in chains.  Pneumococci are typically associated with pneumonia, but may cause infection in other organs such as the brain (pneumococcal meningitis) and blood stream (pneumococcal septicemia).  (Image courtesy of the Centers for Disease Control and Prevention.)

    Pneumonia is a lung infection. It can be caused by many different germs, including bacteria, viruses, and fungi. This article discusses pneumonia that occurs...

  • Test

    PPD skin test

    Kidneys can be damaged by tuberculosis.  Tuberculosis generally affects the lungs, but may cause infection in many other organs in the body.  (Image courtesy of the Centers for Disease Control and Prevention.)

    The PPD skin test is a method used to diagnose silent (latent) tuberculosis (TB) infection. PPD stands for purified protein derivative.

  • Disease

    Pulmonary actinomycosis

    Air is breathed in through the nasal passageways, travels through the trachea and bronchi to the lungs.

    Pulmonary actinomycosis is a rare lung infection caused by bacteria.

  • Disease

    Pulmonary aspergilloma

This x-ray shows a single lesion (pulmonary nodule) in the upper right lung (seen as a light area on the left side of the picture). The nodule has distinct borders (well-defined) and is uniform in density. Tuberculosis (TB) and other diseases can cause this type of lesion.

    Pulmonary aspergilloma is a mass caused by a fungal infection that usually grows in lung cavities. It can also appear in the brain, kidney, or other organs.