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| Retroperitoneal lymph node biopsy by needle aspiration [Go Back to Keywords List Page]  | Retroperitoneal lymph node biopsy by needle aspiration A retroperitoneal lymph node biopsy by needle aspiration is
a procedure in which the doctor takes a sample of your
retroperitoneal lymph nodes. These are the lymph nodes at
the back of your abdominal and pelvic cavity.
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