An Overview Of Prostate Cancer Staging

By Nancy Gardner


Staging of cancer is very important in communicating the features of the disease. There is need for scanning and laboratory tests for the proper diagnosis to be made. Knowing the characteristics of the disease will help the doctors make appropriate treatment decisions. That is why prostate cancer staging is insisted.

The cancer of the prostate is staged using TNM stages. This is in the international standard of staging. It assesses the tumor, lymph nodes and the degree of spread. If the tumor is said to be in T1, it means that the area affected is too small and thus a diagnosis cannot be made through palpation or scans. A needle biopsy has to be done in order to pick this up.

Tumors in stage T2 are classified into three categories. The first one is T2a which indicates that only one lobe of the prostate gland is affected. In T2b, more than half of gland is affected and in T2c stage the entire lobe is affected. On the other hand, if the tumor has left the prostate gland to affect the capsule but has not spread further is said to be in stage T3. This stage has two categories. T3a and T3b where the malignancy has reached the capsule and seminal vesicles respectively.

Stage T4 tumors usually have metastasized. The common areas affected include the pelvic cavity, bladder and rectum. The T4 and T3 tumor stages are said to be locally advanced stages. These are the most difficult stages to treat.

In lymph node staging, the guiding factor is the severity of the condition in the lymph nodes. They are said to be positive if they contain cancer cells. This makes them to swell. In NX stage, it is not possible to check them and in N0 stage the lymph nodes adjacent to the prostate have no cancer cells. However, in N1 stage, the malignancy has reached the lymph nodes.

In metastasis staging, the first one is Mo where the malignancy has not spread out of pelvis. In M1, the malignancy has reached outside the pelvis. This stage has three subdivisions. In M1a, the cancerous cells have not affected the lymph nodes which are not in the pelvis while in M1b, the malignancy has spread to the bone. Last come M1c in which the cancer has spread to the rest of body organs. There are different things which have to be put into consideration when staging the cancer. Mostly, it is the invasiveness of the disease and its aggressiveness.

Locally advanced cancer of the prostate is confined to the gland but the metastatic type has spread. The places which are hardly hit are the bones and lymph nodes. However, many a times it reaches other body organs too.

Metastasis can occur when the tumor is still in its initial stages. That is why people are advised to regularly go for blood tests and scans for early diagnosis. If some cancerous cells are found in other body organs, immediate action should be taken to control the spread.




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