Cystic retroperitoneal lesions
A cystic retroperitoneal lesion can carry a relatively broad differenital which includes:
- retroperitoneal cystic lymphangioma
- retroperitoneal mucinous cystadenoma
- retroperitoneal cystic teratoma
- retroperitoenal cystic mesothelioma
- pseudomyxoma retroperitonei with cystic change
- perianal mucinous carcinoma with cystic change
- pseudocysts
- retroperitoneal lymphocoele
- urinoma from a retroperitoneal bladder rupture
- tailgut cyst
- retroperitoneal hematoma with liquefaction
- retroperitoneal hydatid cyst
- retroperitoneal bronchogenic cyst 1
- cisterna chyli: if in expected location right of the aorta, posterior to the right crus usually L1, L2 level 4
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