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How is gallbladder cancer staged?

Dr. Jeanne Morrison, PhD
Family Practitioner

Gallbladder cancer is staged using the TNM staging system. This takes into account the tumor itself and extent of invasion (T), the extent of spread to the lymph nodes (N), and the extent of metastasis to other parts of the body (M). The extent of invasion is ranked from in situ(is) meaning no invasion, to 4, meaning that the tumor has spread to more than 1 organ aside from the liver, or that it has spread into a nearby blood vessel. N ranges from X, meaning that the status of nearby lymph nodes is not known, to 1, indicating spread to lymph nodes. M ranges from X, indicating that the extent of metastatic spread is not known to 1, indicating spread to areas of the body far away from the primary tumor. Stage 0 is the earliest and has the best prognosis. This is denoted Tis, N0, M0, meaning that the tumor itself is limited to the inside of the gallbladder, and that there is no spread to lymph nodes (N0), or other organs (M0).

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.