Inflammatory infiltrate limited to alveolar walls describes which type of pneumonia?

Prepare for the Respiratory CAS Exam with comprehensive quizzes. Utilize flashcards and multiple choice questions, each crafted with detailed explanations and hints. Equip yourself for success in your test!

Multiple Choice

Inflammatory infiltrate limited to alveolar walls describes which type of pneumonia?

This question hinges on where the inflammatory infiltrate is located. When it’s limited to the alveolar walls, the interstitial tissue thickens without filling the air spaces. That pattern is characteristic of interstitial pneumonia, typically seen with viral or atypical pathogens, and it often presents with a reticular or diffuse interstitial pattern rather than the dense consolidation you’d expect if the alveolar spaces were filled with pus. Bronchopneumonia shows patchy inflammation around the bronchi and extends into nearby alveolar spaces, lobar pneumonia causes consolidation of an entire lobe due to air-space filling, and pulmonary edema involves fluid in the interstitium and alveoli without an inflammatory infiltrate.

This question hinges on where the inflammatory infiltrate is located. When it’s limited to the alveolar walls, the interstitial tissue thickens without filling the air spaces. That pattern is characteristic of interstitial pneumonia, typically seen with viral or atypical pathogens, and it often presents with a reticular or diffuse interstitial pattern rather than the dense consolidation you’d expect if the alveolar spaces were filled with pus. Bronchopneumonia shows patchy inflammation around the bronchi and extends into nearby alveolar spaces, lobar pneumonia causes consolidation of an entire lobe due to air-space filling, and pulmonary edema involves fluid in the interstitium and alveoli without an inflammatory infiltrate.

More practice questions