BCR and metastatic malignant neoplasm in the lymph nodes: Although the possibility cannot be ruled out that lymph node metastasis was overlooked because of a technical problem associated with eLND or pathological evaluation in some of these patients, we consider microlymphatic invasion to be a premonitory finding of lymph node metastasis and a useful predictor of BCR in patients who underwent RARP and eLND for high-risk PC.