Elementary Lesions
Honeycombing
Characteristics
Clustered cystic airspaces with well defined walls, measuring 2-10 mm in diameter, sometimes reaching 25 mm, usually in subpleural regions
Diagnostic Orientation
Intralobular reticulation
Traction bronchiectasis and bronchiolectasis
Loss of lobar volume
Fissured distortion
1. Honeycombing
Subpleural honeycombing forming several layers of cysts in a 73-year-old man with usual interstitial pneumonia.
2. Honeycombing
69-year-old man with usual interstitial pneumonia. Subpleural honey combing is associated with reticular pattern.
3. Honeycombing
Sagittal reformation in the same patient showing the preferential subpleural and basal distribution.
4. Honeycombing
56-year-old man with history of sarcoidosis. Typical honeycombing in a upper lobe distribution.
5. Honeycombing
- Coronal reformation in the same patient shows the association of honeycombing and reticulation in lung apices.
- Distribution of fibrosis to apices makes this fibrosis incompatible with UIP.