Testicular Cancer Staging
If surgery confirmed a testicular cancer diagnosis, one of the most important next steps is determining its stage. This process describes how far the cancer has progressed and whether it has spread beyond the testicle. Your oncology team at RMCC will use that information to develop an effective and personalized treatment plan.
Testicular cancer staging is based on the TNM system developed by the American Joint Committee on Cancer (AJCC). This system evaluates several key factors. The “T” category describes the size and extent of the primary tumor within the testicle and whether it has grown into nearby structures. The “N” category indicates whether cancer has spread to nearby lymph nodes, particularly those located in the abdomen. The “M” category refers to metastasis, meaning whether the cancer has spread to distant organs such as the lungs, liver, or brain.
For testicular cancer, an additional category is included: “S,” which reflects the levels of serum tumor markers in the blood. These markers include alpha-fetoprotein (AFP), beta-human chorionic gonadotropin (beta-hCG), and lactate dehydrogenase (LDH). Elevated levels of these markers can indicate the presence and activity of cancer and play a crucial role in staging and treatment planning.
The results of the T, N, M, and S categories are combined to assign an overall stage. In general, lower stage numbers indicate cancer that is more limited in spread, while higher stage numbers reflect more advanced disease. Testicular cancer is divided into Stage 0, Stage I, Stage II, and Stage III.
Stages of Testicular Cancer
Stage 0 testicular cancer, also known as carcinoma in situ or intratubular germ cell neoplasia (Tis, N0, M0, S0), represents the earliest form of the disease. At this stage, abnormal cells are confined to the seminiferous tubules inside the testicle, where sperm is produced. The cancer has not invaded surrounding tissues, spread to lymph nodes, or metastasized to distant organs. Tumor marker levels are typically normal.
Stage 0 can be difficult to detect because it often does not cause symptoms and may not produce elevated tumor markers. In some cases, it is discovered incidentally during evaluation for other conditions.
Stage I testicular cancer means the tumor has grown beyond the seminiferous tubules and may have extended into nearby structures within the testicle, but there is no evidence that it has spread to lymph nodes or distant organs. Tumor marker levels may be normal or unavailable at this stage.
Stage I is further divided into substages based on how far the tumor has grown and whether tumor markers are elevated.
- Stage IA (T1, N0, M0, S0)
- Tumor has grown beyond seminiferous tubules
- Tumor remains confined to the testicle
- Tumor has not extended to nearby lymph nodes, blood vessels, or other parts of the body
- Tumor markers within normal limits
- Stage IB (T2, T3, or T4, and N0, M0, S0)
- Tumor has grown outside of testicle and into nearby areas
- Cancer has not spread to lymph nodes or to other parts of the body
- Tumor markers within normal limits
- Stage IS (any T, N0, M0, and S1-S3)
- Tumor may or may not have grown outside of the testicle
- Cancer has not spread to lymph nodes or other parts of the body
- One or more tumor marker levels are higher than average
Stage II testicular cancer indicates that the disease has spread to nearby lymph nodes in the abdomen but has not metastasized to distant organs. Tumor marker levels may be normal or mildly elevated.
- Stage IIA (any T, N1, M0, S0 or S1)
- Tumor may have grown outside of the testicle or not
- Cancer has not spread to other parts of the body
- Tumor markers are within acceptable limits or at least one marker is slightly elevated
- Cancer has spread to at least one nearby lymph node (but no more than five nearby lymph nodes) and no lymph nodes are larger than 2 cm across
- Stage IIB (any T, N2, M0, S0 or S1)
- Tumor may have grown outside of the testicle or not
- Cancer has not spread to other parts of the body
- Tumor markers are within acceptable limits or at least one marker is slightly elevated
- Cancer has spread to at least one nearby lymph node, is larger than 2 cm but smaller than 5 cm across, or
- Cancer has spread to more than five lymph nodes
- Stage IIC (any T, N3, M0, S0 or S1)
- Tumor may have grown outside of the testicle and has not spread to any other parts of the body.
- Tumor markers are within acceptable limit or at least one marker is slightly elevated
- Cancer has spread to nearby lymph nodes (N2), is larger than 2 cm but not larger than 5 cm, or
- Cancer has grown outside of a lymph node, or
- More than five lymph nodes contain cancer (found during surgery)
Stage III testicular cancer is the most advanced stage and indicates that the disease has spread beyond the abdominal lymph nodes to distant lymph nodes or organs. Tumor marker levels are often elevated and help further classify the stage.
- Stage IIIA (any T, any N, M1a, S0 or S1)
- Tumor may have grown outside of the testicle or not
- Cancer may or may not have spread to nearby lymph nodes
- Cancer has spread to the lungs or to distant lymph nodes
- Tumor markers are within acceptable limits or at least one marker is slightly elevated
- Stage IIIB (any T, N1-N3, M0, S2; or any T, any N, M1a, S2)
- Tumor may have grown outside of the testicle or not
- Cancer has spread to one or more nearby lymph nodes
- Cancer has not spread to distant parts of the body
- At least one tumor marker is significantly higher than usual
- Stage IIIC (any T, N1-N3, M0, S3; or any T, any N, M1a, S3)
- Tumor may have grown outside of the testicle or not
- The cancer has spread to one or more nearby lymph nodes but hasn’t spread to distant parts of the body. At least one tumor marker level is very high, or
- It has spread to distant lymph nodes (with or without affecting the nearby lymph nodes) or has spread to the lungs. At least one tumor marker level is very high, or
- has spread to parts of the body other than the lungs and lymph nodes with tumor markers of any level (any T, any N, M1b, any S