CRAZY PAVING

57-year-old female with progressive dyspnea.

CXR shows bilateral, diffuse alveolar opacities having a perihilar and basal distribution with sparing of the apices

CT shows diffuse ground glass change with crazy paving morphology characterized by bilateral diffuse ground-glass opacities (GGO) with interlobular and intralobular septal thickening. There is a geographical distribution .

Differential diagnosis
ARDS
PCP pneumonia
CHF
Alveolar Hemorrhage
UIP
Hypersensitivity Pneumonitis
XRT pneumonitis
COP
Chronic Eosinophilic
Lymphangitis
Veno-Occlusive Disease

Ashley Davidoff MD