Prostate cancer staging; five panel drawing showing a side view of normal male anatomy and closeup views of Stage I, Stage II, Stage III, and Stage IV showing cancer growing from within the prostate to nearby tissue and then to lymph nodes or other parts of the body.
As prostate cancer progresses from Stage I to Stage IV, the cancer cells grow within the prostate, through the outer layer of the prostate into nearby tissue, and then to lymph nodes or other parts of the body.Shown is a drawing of a digital rectal exam (DRE). With a gloved hand and lubricated finger, the doctor feels the prostate from the rectum.
Source: National Cancer InstituteOriginal file hereThis image is in the public domain and can be freely reused. Please credit the source and/or author listed above.