. . . . . "NCI: An area of abnormal tissue. A lesion may be benign (not cancer) or malignant (cancer).,NCI: A localized pathological or traumatic structural change, damage, deformity, or discontinuity of tissue, organ, or body part. (NCI),NCI: A localized pathological or traumatic structural change, damage, deformity, or discontinuity of tissue, organ, or body part." . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .