This model provides prostates with tumors in 4 different development periods.
- The 1st development : Begin , Slightly enlarged, but normal prosmate gland simulates benign stage.
- The 2nd development : Some hard tubers can be observed in the top right quadrant of prostate, It's the beginning of the tumor
- The 3rd development : Prostate with easily palpable large mass simulate intermediate stage. The small module has increased is size and has become an external hard mass on the surface of the gland.
- The 4th development : Prostate with malignant invasive cancer simulate terminal stage. This gland is totally replaced with carcinoma. The entire gland will feel gard and irregular.