One-half scale, mid-sagittal section of the make pelvis. Base displays three 3-D cross-sections of the prostate gland. Sections represent the stages of Benign Prostatic Hyperplasia (BPH) or enlarges prostate: normal, moderate, and advanced. 8 in. x 2-1/2 in. x 1/4 in. panel with 6-1/2 in. x 5-1/4 in. key card.