Stage IVA salivary gland cancer

Stage IV salivary gland cancer is divided into stages IVA, IVB, and IVC. In stage IVA, (1) cancer has spread to the skin, jawbone, ear canal, and/or facial nerve. Cancer may have spread to one lymph node on the same side of the head or neck as the tumor. The lymph node is 3 centimeters or smaller and cancer has not grown outside the lymph node; OR (2) the tumor is any size and cancer may have spread to soft tissue around the salivary gland or to the skin, jawbone, ear canal, and/or facial nerve. Cancer has spread (a) to one lymph node on the same side of the head or neck as the tumor; the lymph node is 3 centimeters or smaller and cancer has grown outside the lymph node; or (b) to one lymph node on the same side of the head or neck as the tumor; the lymph node is larger than 3 centimeters but not larger than 6 centimeters and cancer has not grown outside the lymph node; or (c)to more than one lymph node on the same side of the head or neck as the tumor; the lymph nodes are 6 centimeters or smaller and cancer has not grown outside the lymph nodes; or (d) to lymph nodes on both sides of the head or neck or on the side opposite the primary tumor; the lymph nodes are 6 centimeters or smaller and cancer has not grown outside the lymph nodes.

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