25. Lobar pneumonia

Page created on December 4, 2018. Last updated on January 17, 2019 at 17:06

Staining: HE

Organ: Lung


The slide has two different parts. The left part shows no significant amount of inflammatory cells in the alveoli.

The right part is diffusely inflamed. The alveoli in the right part contains exudate and neutrophils.

Diagnosis: Lobar pneumonia


  • See theoretical topics


In lobar pneumonia the inflammation targets only one lobe. The infection does not cross the border to other lobes, however the lobe that is infected is diffusely infiltrated by neutrophils. There are no foci, as there is in bronchopneumonia.

The alveoli contain purulent exudate (pus), which consists of neutrophils, necrotic cells and oedema fluid. This is therefore the purulent stage of pneumonia.

Protected Area

These images are password-protected due to copyright concerns. Please verify with a password to unlock the content. If you are a medical student in Pécs or feel like you should have access to the content for any other reason, send me an e-mail.

Leave a Reply

Inputting your name is optional. All comments are anonymous.

This site uses Akismet to reduce spam. Learn how your comment data is processed.