The prostate, an essential component of the male reproductive system, is a small gland resembling a walnut. Its primary function involves producing seminal fluid, which aids in the transportation and nourishment of sperm. Positioned just below the bladder, it encircles the urethra, the tube responsible for urine elimination. Prostate cancer ranks as the second most prevalent cancer among men after skin cancer. While certain forms of prostate cancer progress gradually, others exhibit aggressiveness and rapid metastasis.
T1 Prostate Cancer
Prostate cancer is categorized into four clinical stages: T1, T2, T3, and T4. T1 prostate cancer refers to a tumor that cannot be felt during an examination or detected through imaging. It is typically discovered incidentally while treating another medical condition.
T1 prostate cancer can be further classified into three subcategories. T1a is diagnosed during surgery for benign prostatic hyperplasia, a condition characterized by abnormal prostate growth. In T1a, less than five percent of the tissue removed during surgery shows cancer cells. On the other hand, T1b is also detected during surgery for benign prostatic hyperplasia, but in this case, more than five percent of the removed tissue contains cancer cells. Lastly, T1c is identified through a needle biopsy performed to analyze elevated levels of prostate-specific antigen (PSA) in the blood.
T2 and T3 Prostate Cancer
T2 and T3 prostate cancers are considered more advanced than T1. In the case of T2 prostate cancer, the tumor has grown large enough for a doctor to detect during an examination. It may also be visible on imaging tests, but it is generally contained within the prostate gland itself. This stage can be further categorized into T2a, where the tumor has invaded half or less than half of one side of the prostate, T2b, where the tumor has spread to more than half of one side of the prostate, and T2c, where it has spread to both sides of the prostate.
In contrast, T3 prostate cancer indicates that the tumor has extended beyond the confines of the prostate gland. In T3a, the cancer has not yet spread to the seminal vesicles, which are responsible for producing sperm. However, in T3b, the tumor has reached the seminal vesicles.