Crazy paving

Changed by Daniel J Bell, 2 Sep 2018

Updates to Article Attributes

Body was changed:

Show markup changes

Crazy paving refers to the appearance of ground-glass opacity with superimposed interlobular septal thickening and intralobular ~~reticular~~septal thickening, seen on chest HRCT. It is a non-specific finding that can be seen in a number of conditions.

Pathology

Aetiology

Common causes:

acute respiratory distress syndrome (ARDS)
bacterial pneumonia
acute interstitial pneumonia: ARDS of unknown aetiology
pulmonary alveolar proteinosis (PAP): rare, but the great majority of patients with PAP demonstrate crazy paving

Less common causes:

drug-induced pneumonitis
radiation pneumonitis
pulmonary haemorrhage / diffuse pulmonary haemorrhage
- Goodpasture syndrome
chronic eosinophilic pneumonia
usual interstitial pneumonia (UIP) with superimposed diffuse alveolar damage
pulmonary oedema
pulmonary infections
cryptogenic organizing pneumonia (COP, formerly BOOP)
mucinous bronchioloalveolar carcinoma
sarcoidosis, especially alveolar sarcoidosis
lipoid pneumonia
pulmonary veno-occlusive disease

-<p><strong>Crazy paving</strong> refers to the appearance of <a href="/articles/ground-glass-opacification-1">ground-glass opacity</a> with superimposed <a href="/articles/interlobular-septal-thickening">interlobular septal thickening</a> and intralobular reticular thickening, seen on chest HRCT. It is a non-specific finding that can be seen in a number of conditions. </p><h4>Pathology</h4><h5>Aetiology</h5><p>Common causes:</p><ul>
+<p><strong>Crazy paving</strong> refers to the appearance of <a href="/articles/ground-glass-opacification-1">ground-glass opacity</a> with superimposed <a href="/articles/interlobular-septal-thickening">interlobular septal thickening</a> and <a title="Intralobular septal thickening" href="/articles/intralobular-septal-thickening">intralobular septal thickening</a>, seen on <a title="HRCT lung" href="/articles/high-resolution-ct">chest HRCT</a>. It is a non-specific finding that can be seen in a number of conditions. </p><h4>Pathology</h4><h5>Aetiology</h5><p>Common causes:</p><ul>

Updates to Synonym Attributes

Title was changed:

Crazy paving ~~apperance~~appearance in the lung

Updates to Synonym Attributes

Title was changed:

Crazy paving ~~apperance~~appearance

ADVERTISEMENT: Supporters see fewer/no ads

{"current_user":null,"inclusions":[{"imageId":3700,"studyId":6413,"caseSlug":"not-so-crazy-street-paving-photo","caption":"Figure 1: analogous photograph - Irregular paving ","thumbnail":"https://prod-images-static.radiopaedia.org/images/3700/6d543601b5ab0a9c72c6ad6abc93a8_big_gallery.jpeg","isStack":false,"diagnosticCertainty":"not_applicable"},{"imageId":323,"studyId":37417,"caseSlug":"pneumocystis-carinii-pneumonia-3","caption":"Case 1: pneumocystis carinii pneumonia demonstrates bilateral areas of ground-glass opacity with reticulation.","thumbnail":"https://prod-images-static.radiopaedia.org/images/323/939d75215998468259a6ab7ca34f23_big_gallery.jpeg","isStack":false,"diagnosticCertainty":"confirmed_unsubstantiated"},{"imageId":321150,"studyId":9520,"caseSlug":"pulmonary-alveolar-proteinosis","caption":"Case 2: pulmonary alveolar proteinosis","thumbnail":"https://prod-images-static.radiopaedia.org/images/321150/downloaded_image20211019-1662-bbv7jn_big_gallery.jpeg","isStack":true,"diagnosticCertainty":"probable"},{"imageId":3576955,"studyId":23282,"caseSlug":"diffuse-pulmonary-haemorrhage-1","caption":"Case 3: pulmonary hemorrhage","thumbnail":"https://prod-images-static.radiopaedia.org/images/3576955/9de706ffbc965d306c322a756df772_big_gallery.JPG","isStack":true,"diagnosticCertainty":"probable"},{"imageId":37680357,"studyId":66923,"caseSlug":"pulmonary-alveolar-proteinosis-10","caption":"Case 4: spared pulmonary lobules - PAP","thumbnail":"https://prod-images-static.radiopaedia.org/images/37680357/52d29d41689a154c28222ed956e813_big_gallery.jpeg","isStack":true,"diagnosticCertainty":"confirmed_unsubstantiated"},{"imageId":43020266,"studyId":72347,"caseSlug":"pulmonary-alveolar-proteinosis-11","caption":"Case 5","thumbnail":"https://prod-images-static.radiopaedia.org/images/43020266/82ddc17c66b50a4540ec22f115695b_big_gallery.jpeg","isStack":true,"diagnosticCertainty":"confirmed_substantiated"},{"imageId":52415571,"studyId":87945,"caseSlug":"covid-19-pneumonia-89","caption":"Case 6: COVID-19 pneumonia","thumbnail":"https://prod-images-static.radiopaedia.org/images/52415571/aed271119ab459b30bff690dc27c68_big_gallery.jpeg","isStack":true,"diagnosticCertainty":"confirmed_substantiated"}],"ddx_inclusions":[],"lang":"us"}