DDR2 and metastatic malignant neoplasm in the lymph nodes: In the univariate analysis, DDR2 status (p = 0.0019) as well as pT (p < 0.0001), lymph node metastasis (p = 0.032), histological grade (p = 0.032), ER (p = 0.012), PR (p = 0.0006), and Ki67 LI (p = 0.0002) were demonstrated as significant prognosis factors.