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stage I gastric cancer

(... GAS-trik KAN-ser)
Stage I is divided into stages IA and IB. In stage IA, cancer has formed in the mucosa (innermost layer) of the stomach wall and may have spread to the submucosa (layer of connective tissue between the mucosa and the muscle layer). In stage IB, cancer (1) has formed in the mucosa of the stomach wall and may have spread to the submucosa and has spread to 1 or 2 nearby lymph nodes; or (2) has formed in the mucosa of the stomach wall and has spread to the muscle layer. Also called stage I stomach cancer.
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Layers of the stomach wall; drawing of the stomach with an inset showing the layers of the stomach wall, including the mucosa (innermost layer), submucosa, muscle layer, subserosa, and serosa (outermost layer).Enlarge this image in new window
Layers of the stomach wall. The wall of the stomach is made up of the mucosa (innermost layer), submucosa, muscle layer, subserosa, and serosa (outermost layer). The stomach is an organ in the upper abdomen.
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