Prediction for prognosis of resected pT1a-1bN0M0 adenocarcinoma based on tumor size and histological status: Relationship of TNM and IASLC/ATS/ERS classifications

Compared to a single classification, combining TNM and IASLC/ATS/ERS classifications could provide more detail information concerning disease recurrence. AIS and MIA should be handled equally, regardless of tumor size, because their non-/less invasive status is more useful for predicting prognosis than their tumor size classification. In contrast, the T descriptors based on TNM classification are important for predicting prognosis in invasive adenocarcinoma.