Pneumonia

Changed by Daniel J Bell, 3 Mar 2018

Updates to Article Attributes

Body was changed:

Show markup changes

Pneumonia is a general term in widespread use, defined as infection within the lung. It is due to material, usually purulent, filling the alveoli.

Terminology

Pneumonia is in contrast to pneumonitis, which is inflammation of the pulmonary interstitium. Of note, some of the interstitial lung diseases are termed pneumonia rather than pneumonitis. Some clinicians, including even some radiologists who should know better, use the term consolidation as a synonym for pneumonia, this is of course incorrect.

Classification

Pneumonias can be classified by:

aetiology
- infection
- aspiration pneumonia
- lipid: lipoid pneumonia
- location
  - community-acquired pnemonia
  - hospital-acquired pneumonia
method of spread (a pathological description)
- bronchopneumonia
- lobar pneumonia
  - multilobar pneumonia
radiographic appearance

-<p><strong>Pneumonia </strong>is a general term in widespread use, defined as infection within the <a href="/articles/lung">lung</a>. It is due to material, usually purulent, filling the alveoli.</p><h4>Terminology</h4><p>Pneumonia is in contrast to <a href="/articles/pneumonitis">pneumonitis</a>, which is inflammation of the <a href="/articles/pulmonary-interstitium">pulmonary interstitium</a>. Of note, some of the <a href="/articles/interstitial-lung-disease">interstitial lung diseases</a> are termed pneumonia rather than pneumonitis.</p><h4>Classification</h4><p>Pneumonias can be classified by:</p><ul>
+<p><strong>Pneumonia </strong>is a general term in widespread use, defined as infection within the <a href="/articles/lung">lung</a>. It is due to material, usually purulent, filling the alveoli.</p><h4>Terminology</h4><p>Pneumonia is in contrast to <a href="/articles/pneumonitis">pneumonitis</a>, which is inflammation of the <a href="/articles/pulmonary-interstitium">pulmonary interstitium</a>. Of note, some of the <a href="/articles/interstitial-lung-disease">interstitial lung diseases</a> are termed pneumonia rather than pneumonitis. Some clinicians, including even some radiologists who should know better, use the term <a title="Lung consolidation (mnemonic)" href="/articles/lung-consolidation-mnemonic">consolidation</a> as a synonym for pneumonia, this is of course incorrect.</p><h4>Classification</h4><p>Pneumonias can be classified by:</p><ul>
~~-<li><a title="Cavitating pneumonia" href="/articles/cavitating-pneumonia">cavitating pneumonia</a></li>~~
~~-<li><a title="haemorrhagic pneumonia" href="/articles/haemorrhagic-pneumonia">haemorrhagic pneumonia</a></li>~~
+<li><a href="/articles/cavitating-pneumonia">cavitating pneumonia</a></li>
+<li><a href="/articles/haemorrhagic-pneumonia">haemorrhagic pneumonia</a></li>

Sections changed:

ADVERTISEMENT: Supporters see fewer/no ads

{"current_user":null,"inclusions":[{"imageId":1371188,"studyId":14900,"caseSlug":"pneumonia-right-middle-lobe-1","caption":"Case 1: RML pneumonia","thumbnail":"https://prod-images-static.radiopaedia.org/images/1371188/0a1f5edc85aa58d5780928cb39b08659c1fc4d6d7c7dce2f8db1d63c7c737234_big_gallery.jpeg","isStack":false,"diagnosticCertainty":"confirmed_substantiated"},{"imageId":8151527,"studyId":31574,"caseSlug":"aspiration-pneumonia-in-a-trauma-case","caption":"Case 2: aspiration pneumonia","thumbnail":"https://prod-images-static.radiopaedia.org/images/8151527/95a07767cebe3da2923819c650a539_big_gallery.jpg","isStack":true,"diagnosticCertainty":"confirmed_unsubstantiated"},{"imageId":1828160,"studyId":17021,"caseSlug":"primary-atypical-pneumonia","caption":"Case 3: atypical pneumonia","thumbnail":"https://prod-images-static.radiopaedia.org/images/1828160/319c43fb5c1c2fca2a4e710a7a6c4a_big_gallery.jpg","isStack":false,"diagnosticCertainty":"probable"},{"imageId":8589259,"studyId":32151,"caseSlug":"varicella-pneumonia","caption":"Case 4: varicella pneumonia","thumbnail":"https://prod-images-static.radiopaedia.org/images/8589259/debc366fbee881069b1bd4b23a8020_big_gallery.jpg","isStack":false,"diagnosticCertainty":"possible"},{"imageId":3443028,"studyId":23173,"caseSlug":"pneumocystis-pneumonia-7","caption":"Case 5: PCP","thumbnail":"https://prod-images-static.radiopaedia.org/images/3443028/96f0a38a6e95f4756c097e188a6071_big_gallery.JPG","isStack":true,"diagnosticCertainty":"probable"},{"imageId":31668695,"studyId":60918,"caseSlug":"community-acquired-methicillin-resistant-staphylococcus-aureus-pneumonia","caption":"Case 6: community acquired methicillin resistant staphylococcus aureus pneumonia","thumbnail":"https://prod-images-static.radiopaedia.org/images/31668695/bc370d0566b31259c2d9544748eb21_big_gallery.jpeg","isStack":false,"diagnosticCertainty":"confirmed_substantiated"},{"imageId":53054648,"studyId":92885,"caseSlug":"klebsiella-pneumonia-causing-a-bulging-fissure","caption":"Case 7: with bulging fissure","thumbnail":"https://prod-images-static.radiopaedia.org/images/53054648/dc025523f07c043550a2c9de68ae50_big_gallery.jpeg","isStack":false,"diagnosticCertainty":"confirmed_substantiated"},{"imageId":54184430,"studyId":101512,"caseSlug":"air-bronchogram-in-pneumonia","caption":"Case 8","thumbnail":"https://prod-images-static.radiopaedia.org/images/54184430/110117_big_gallery.jpeg","isStack":true,"diagnosticCertainty":"confirmed_unsubstantiated"},{"imageId":64356147,"studyId":145073,"caseSlug":"haemophilus-pneumonia","caption":"Case 9: Haemophilus pneumonia","thumbnail":"https://prod-images-static.radiopaedia.org/images/64356147/f2f5ae7d3790d1bb86dd68ffa6808c2b845e590f591ac53faed23f9e8bdc965d_big_gallery.jpeg","isStack":true,"diagnosticCertainty":"confirmed_unsubstantiated"},{"imageId":64410763,"studyId":145079,"caseSlug":"atypical-pneumonia-metapneumovirus","caption":"Case 10: Atypical pneumonia - metapneumovirus","thumbnail":"https://prod-images-static.radiopaedia.org/images/64410763/66a5a5b80adc1016bb14da1a801ed13182bd9412fb5fc9737375f7f2c9dd8633_big_gallery.jpeg","isStack":true,"diagnosticCertainty":"confirmed_unsubstantiated"}],"ddx_inclusions":[],"lang":"us"}

Pneumonia

Updates to Article Attributes

Terminology

Classification

See also