Table 2.

Distribution of Long’s data set¹⁷ samples in various stages of prostate cancer.

Prostate stages	Description	No. of patients
T1c	The tumor can be a needle biopsy due to the elevated PSA level. But still cannot be detected during imaging test.	14
T2	The tumor is found only in the prostate.	10
T2a	The tumor exists in less than a half (or half at most) in only one of prostate glands.	23
T2b	The tumor exists in more than a half in only one of prostate glands.	11
T2c	The tumor exists in both sides of the prostate.	30
T3	The tumor has grown through prostate tissue into the outside.	2
T3a	The tumor has grown through the prostate either on 1 or both sides of the prostate.	6
T3b	The tumor has spread into the seminal vesicles	8
T4	The tumor has spread to other organs.	1

Abbreviation: PSA, prostate-specific antigen.