The data commonly associated with PCa will be entered in the database: administrative items (name, DOB, address, Hospital N°, Pathology N°), preoperative PSA, clinical stage, pathological items (weight and size of the specimen, pathological stage including lymph node status, Gleason score, % of grade 4 ou 5, greater axis of the main focus, margin status), and follow-up items (both biological and clinical).The following items will also be specified: BMI, waist circumference, fasting glucose, blood pressure, circulating lipids (triglycerides, total, LDL and HDL cholesterol), ongoing treatments (lipid lowering drugs, HTA, treatments for diabetes), ethno-geographic origin, and family history of PCa During the surgical procedures, 3 pieces of pelvic adipose tissue (around 5g, 2g and 2 g, for tasks 1, 2, and 3 of Axis 1, respectively) will be sampled, sent to the biological resource center, and immediately frozen at -80°C. The investigators choose to sample visceral WAT instead of subcutaneous WAT, because visceral adipocytes are more metabolically active (8). Among visceral WAT, the investigators choose to sample perivesical adipose tissue, since fat around the bladder is always very abundant, and can be easily taken during the surgical procedure. The prostate specimens will be sent immediately to the pathology departments, and managed in a standardized manner.