The TNM staging system is the commonly accepted technique of staging prostate cancer. It assesses metastases, lymph nodes and tumor separately. T staging comes first. In tumor stage 1, the malignancy cells are so insignificant such that they cannot be picked up by scans or the normal laboratory tests. A needle biopsy has to be done for confirmation purposes.
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.
In tumor stage 4, the malignancy cells have gone on to affect the other regions of the body. The areas which are likely to be affected include the bladder, rectum, pelvic cavity sides and the muscles. The third and fourth stages are the most critical ones.
The lymph nodes will be described to be positive if they have cancerous cells. This makes them enlarge. The degree of enlargement is directly proportional to the number of cancer cells in the lymph node. In NX stage, the nodes can not be checked while in N0 stage, the nodes close to the gland have not been affected. In N1 stage, the lymph nodes have cancerous cells.
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 type of prostate cancer extends just to the capsule of this gland but the metastasizing type spreads to many of body organs. Mainly, the victims of this spread are the bones and lymph nodes. This is why early detection is stressed to prevent such complications.
To note is that it is possible for the malignancy to spread even when it not advanced. This is why serious actions should be taken to manage the disease in case scans show that there is some degree of metastasis. The cure rates are high if the treatment is started early.
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