teratoma (terÂ´ÉtÅÂ´mÉ) , n a tumor composed of cells capable of differentiating into any of the three primary germ layers. Teratomas in the ovary are usually benign dermoidal cysts; those in the testis are generally malignant.
Necrotic pneumonia is typically due to a bacterial infection that begins to destroy the lung tissue. The most common type of bacteria that causes necrotic pneumonia is Streptococcus pneumoniae, though other species are increasingly being identified in sputum cultures of individuals with this serious form of pneumonia.iagnosis. You can typically diagnose necrotic pneumonia from an X-ray of the chest. A chest X-ray will show pockets or cavities of destroyed tissue, as well as a buildup of fluid in these areas of dead lung tissue. The lungs may also be surrounded by pus or pleural fluid due to the inflammation and tissue damage.
legionnaires disease is a lung infection pneumonia that is caused by the legionella pneumophila commonly referred to as legionella bacteriumit is named after the first recorded outbreak at the 1976 american legions convention in philadelphia which led to 34 deathsegionnaires disease is caused when legionella bacteria enters the lungs through microscopic water droplets transmission usually happens though the nose inhalation and less often the oral cavity aspiration for example when coughing reroutes some ingested fluid down the respiratory tract