The Crazy-Paving Pattern

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The Crazy-Paving Pattern


The crazy-paving pattern is a common finding at thin-section computed tomography (CT) of the lungs. It consists of scattered or diffuse ground-glass attenuation with superimposed interlobular septal thickening and intralobular lines; this finding has a variety of causes. Table 47.1 details the features of some of the more common conditions associated with the crazy-paving pattern.


Differential Diagnoses Related to Crazy-Paving Pattern on CT


Infectious Disease



  • Pneumocystis carinii pneumonia (PCP)
  • Bacterial pneumonia
  • Tuberculosis
  • Mycoplasma pneumonia
  • Chronic eosinophilic pneumonia

Neoplastic Disease



  • Mucinous bronchioloalveolar carcinoma (BAC)

Idiopathic Disease



  • Pulmonary alveolar proteinosis (PAP)
  • Sarcoidosis
  • Nonspecific interstitial pneumonia (NSIP)
  • Organizing pneumonia

Disease Caused by Inhalation

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Jan 10, 2016 | Posted by in MAGNETIC RESONANCE IMAGING | Comments Off on The Crazy-Paving Pattern

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