Anatomy of Adipose Compartments and Fascial Structures in the Posterolateral Region of the Kidney With Special Focus on the Thin Adipose Compartment

Our findings challenge the classical notion that the renal fascia is a single continuous layer, supporting a compartment-centered anatomical model. The posterior and lateral regions of the kidney contain a distinct third adipose compartment, bordered by the posterior renal and extraperitoneal fasciae. This model offers improved anatomical clarity and may aid understanding during laparoscopic, retroperitoneoscopic, and robot-assisted surgeries.