21
Figure 12. Three of the Four High-resolution CT Patterns of
UIP
A) UIP pattern (associated with some paraseptal and centrilobular emphysema in the upper lobes),
B) probable UIP pattern with fibrotic features in the lung periphery (and some centrilobular
emphysema in the upper lobes), and C) indeterminate for UIP pattern (peribronchovascular
and subpleural GGOs, intermingled with fine reticulation but no honeycombing nor traction
bronchiectasis). e fourth category, alternative diagnosis, is widely variable, depending upon the
specific alternative diagnosis, and not shown.
A)
C)
B)
