Karnataka PGET Pathology MCQ Answer 3

• Infection of lung that is restricted to the tissues between the air spaces (interstitial tissues).
• Characterized by peribronchiolar infiltrates of lymphocytes and plasma cells.
• Most commonly caused by Mycoplama Pneumoniae.
• "Walking Pneumonia."/ Interstitial Pneumonia
  
• acute self limited lower respiratory tract infection (tracheo-bronchitis and pneumonia), affecting mostly children and young adults.
• Primary atypical pneumonia was a term introduced in the 40s to identify a group of pneumonias charaterized by: patchy, nonlobar infiltrate on X-ray, and failure to identify a causative organism on Gram stain or culture of sputum as routinely performed.
  
• Many of the agents causing "atypical penumonia" have now been identified, and include: influenza virus, adenovirus, respiratory syncytial virus, cytomegalovirus, Chlamydia, Legionella, P. carinii, and M. pneumoniae.

Category: Karnataka PGET 2007 MCQs