Definition of "retroperitoneum" []

• The space in the abdominal cavity behind the peritoneum. (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "Distant metastasis of invasive lobular carcinoma to the peritoneum or retroperitoneum has been reported fairly frequently."
• "We present a patient who developed benign retroperitoneum after ES plus BOD with large - diameter balloon for removal of a large biliary stone, which was successfully treated conservatively."