Medical Dictionary

retroperitoneum

noun ret·ro·per·i·to·ne·um \-ˌper-ət-ən-ˈē-əm\
plural ret·ro·per·i·to·ne·ums or ret·ro·per·i·to·nea \-ˈē-ə\

Medical Definition of RETROPERITONEUM

:  the space between the peritoneum and the posterior abdominal wall that contains especially the kidneys and associated structures, the pancreas, and part of the aorta and inferior vena cava

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