0W9H
Retroperitoneum
| Pos | Category | Selected Element & Definition |
|---|---|---|
| 0 | Section |
Medical and Surgical
|
| W | Body System |
Anatomical Regions, General
|
| 9 | Operation |
Drainage
Taking or letting out fluids and/or gases from a body part
|
| H | Body Part |
Retroperitoneum
|