Definition of retroperitoneal in US English:



Anatomy Medicine
  • Situated or occurring behind the peritoneum.

    • ‘The patient was started on heparin, and a percutaneous, ultrasound-guided needle core biopsy of the retroperitoneal mass was performed.’
    • ‘Primary retroperitoneal mucinous cystadenoma is an uncommon tumor found exclusively in women.’
    • ‘A retroperitoneal lesion was dissected that appeared to be an abnormally large tail of the pancreas.’
    • ‘My pancreas is a retroperitoneal organ that serves two functions.’
    • ‘Microscopically, sections from the retroperitoneal masses consisted of spindle cell proliferation involving the lymph node and extending into adjoining soft tissue.’