Research Article
Difference of Morphology and Immunophenotype between Central and Peripheral Squamous Cell Carcinomas of the Lung
Table 2
Histological findings of central and peripheral squamous cell carcinomas.
| ā | Central | Peripheral | value | ā | Positive cases/total cases (%) |
| Alveolar filling pattern | 1/12 (8) | 8/30 (27) | 0.16 | Infiltrating pattern | 11/12 (92) | 22/30 (73) | 0.16 | Inflammation | 9/12 (75) | 25/30 (83) | 0.85 | Necrosis | 12/12 (100) | 27/30 (90) | 0.35 | Fibrosis inside the tumor | 12/12 (100) | 28/30 (93) | 0.51 | Keratinization | 8/12 (67) | 19/30 (63) | 0.57 | Capsule | 3/12 (25) | 4/30 (13) | 0.91 | Background lung fibrosis | 4/11 (36) | 14/30 (47) | 0.41 | Traction bronchiectasis | 6/11 (55) | 9/30 (30) | 0.14 | Visceral pleural invasion | 7/15 (47) | 19/35 (54) | 0.62 | Emphysema (microscopic) | 6/13 (46) | 24/31 (77) | 0.039 | Interstitial pneumonia (microscopic) | 2/13 (15) | 17/31 (55) | 0.015 |
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