Is retroperitoneal lymph node enlargement cancer?

Retroperitoneal lymph node enlargement is not necessarily cancer, but it needs to rule out cancer metastasis. Retroperitoneal lymph node enlargement can be intestinal cancer, pancreatic cancer and other metastases, but also can be lymphoma retroperitoneal lymph node invasion. Specific pathological nature, need to retroperitoneal lymph node enlargement for biopsy, or surgery after resection, according to the pathological nature of comprehensive judgment. Retroperitoneal lymph node enlargement, bile duct diameter more than 9 mm, can be considered as retroperitoneal lymph node enlargement, need to do further pathological biopsy, clear to the pathological nature, not necessarily cancer, but need to rule out cancer metastasis, so retroperitoneal lymph node enlargement in clinical need to cause attention.