Predictors of disease recurrence after radical resection and adjuvant chemotherapy in patients with stage IIb-IIIa squamous cell lung cancer: A retrospective analysis

Figure 1 Loose fine-fiber connective tissue of the tumor stroma. Mayer's hematoxylin and eosin staining (× 400).

Figure 2 Features of parenchymal and stromal components of lung squamous cell carcinoma. A: Microvessels in the tumor solid component; B: The fragmentation of the tumor solid component; C: The phenomenon of peritumoral retraction clefting; D: Spread of the tumor through the alveolar air spaces. Mayer's hematoxylin and eosin staining (× 200).

Figure 3 Receiver operating characteristic curves discriminating between cases of lung squamous cell carcinoma with and without disease recurrence. ROC: Receiver operating characteristic.

Figure 4 The relapse-free survival and overall survival curves for the patients with lung squamous cell carcinoma. A: RFS curves of patients with the sum of the odds ratios (ORs) less (red line) and more than 26.2 (blue line); B: Overall survival curves of lung squamous cell carcinoma patients with the sum of the ORs less (red line) and more than 26.2 (blue line).