• Jul 21, 2026 tnm atlas 7th edition d lymph node groups. It also depicts the differentiation between small cell and non-small cell lung cancers for staging purposes. Gastrointestinal Cancers For gastric, colorectal, and esophageal cancers, the atlas provides visual cues for tumor depth (T), extent of lymph node metastasis (N By Beulah Schmeler
