Gastric Lymphography and Detection of Sentinel Nodes

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The lymphatic drainage system of the stomach was studied using lymphography with various dyes, and several major routes have been shown. Gastric lymph channels are multidirectional and form complex networks. We conducted a retrospective study to know the first site of metastasis from small gastric cancers by examining 89 cases with only one lymph node metastasis. The perigastric nodal area close to the primary tumor was the first site of metastasis in only 62% of the cases. N2 metastasis without N1 involvement was seen in 13%. In order to identify sentinel nodes for local resection of gastric cancer, a novel method needs to be developed.