Table 6 Histological comparison between TWCLs, localized forms of fibrosis with emphysema, and honeycombing of UIP
| Â | TWCLs | Localized forms of fibrosis with emphysema (8) | Honeycombing |
|---|---|---|---|
Origin | membranous bronchiole | no definition | peripheral alveoli |
Size | >10 mm | no definition | 3 ~ 10 mm |
Association with emphysema | (+) | (+) | (-) |
Fibroblastic foci | (+) | (-)~(+) | (+) |
Association with fibrosing IP | (+) | (-)~(±) | (+) |