PET Scan (Positron Emission Tomography Scan)
A PET scan is a procedure that is used to find malignant tumor cells in the body. A small amount of radionuclide glucose (sugar) is injected into a vein. The PET scanner rotates around the body and makes a picture of where glucose is being used in the body. Malignant tumor cells show up brighter in the picture because they are more active and take up more glucose than normal cells do.
Specific Stomach Cancer Stages
- Stage 0
- Stage I
- Stage II
- Stage III
- Stage IV
- Recurrent.
Stomach Cancer: Stage 0 (Carcinoma in Situ)
In stage 0, cancer is found only in the inside lining of the mucosal (innermost) layer of the stomach wall. This stomach cancer stage is also called carcinoma in situ.
Stage I stomach cancer is divided into stage IA and stage IB, depending on where the cancer has spread.
Stage IA
In stage IA, the cancer has spread completely through the mucosal (innermost) layer of the stomach wall.
Stage IB
In stage IB, the cancer:
- Has spread completely through the mucosal (innermost) layer of the stomach wall
AND
- Is found in up to six lymph nodes near the tumor
OR
- The cancer has spread to the muscularis (middle) layer of the stomach wall.
In stage II stomach cancer, the cancer has spread:
- Completely through the mucosal (innermost) layer of the stomach wall and is found in 7 to 15 lymph nodes near the tumor
OR
- The cancer has spread to the muscularis (middle) layer of the stomach wall and is found in up to six lymph nodes near the tumor
OR
- The cancer has spread to the serosal (outermost) layer of the stomach wall but not to the lymph nodes or other organs.
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