retroperitoneal dissection
Surgical technique accessing the space behind the peritoneum during laparoscopic procedures.
Full Definition
Retroperitoneal dissection is a laparoscopic surgical technique that involves accessing and working within the retroperitoneal space, which lies behind the peritoneum and contains structures such as the kidneys, ureters, major vessels, and lymph nodes. This approach can be achieved by either developing the space extraperitoneally from the beginning or by incising the peritoneum and entering the retroperitoneal space during an intraperitoneal procedure. The technique is commonly used in urological procedures, lymph node dissections, and when mobilizing the colon. Proper anatomical knowledge is crucial as the retroperitoneal space lacks the clear landmarks available in intraperitoneal surgery, and major vascular structures are in close proximity.
Usage
Usage note: Specify whether approach is purely extraperitoneal or involves peritoneal incision.
In Context
- "Retroperitoneal dissection was performed to mobilize the right colon and identify the ureter." — Colorectal surgery report
- "The surgeon proceeded with retroperitoneal dissection to access the para-aortic lymph nodes." — Oncologic procedure note