Figure 1.

The proportion of patients with cN0 pulmonary adenocarcinoma found to have LN metastases on pathology (pN1, gray; pN2, black; node negative patients [cN0 → pN0], white) in each mutational classification.

Notes: Patients with ALK rearrangement tended to have a higher incidence of occult hilar or mediastinal LN metastases. Triple negative indicates patients with no mutation in ALK, EGFR, or KRAS.

Abbreviations: ALK, anaplastic lymphoma kinase; EGFR, epidermal growth factor receptor; KRAS, kirsten ras genes; LN, lymph node.