Table 1 Primary retroperitoneal masses (differential diagnosis)
From: An asymptomatic huge primary retroperitoneal pseudocyst: a case report and review of the literature
Solid | Cystic | |||||||
|---|---|---|---|---|---|---|---|---|
Neoplastic | Non-neoplastic | Neoplastic | Non-neoplastic | |||||
Lymphoid tumors; lymphoma | Retroperitoneal fibrosis | Mature teratomas | Pancreatic pseudocysts | |||||
Sarcomas | Extra-medullary hematopoiesis | Mucinous cystadenomas | Non-pancreatic (Idiopathic) pseudocysts | |||||
Liposarcoma | Malignant fibrous histiocytoma | Leiomyosarcoma | Erdheim-Chester disease | Cystic mesotheliomas | Lymphoceles | |||
Neurogenic tumors | Â | Cystic lymphangioma | Urinomas | |||||
Schwannoma | Paraganglioma | Ganglioneuroma | Neurofibroma | Â | Mullerian cysts | Hematomas | ||
Immature teratomas | Â | Epidermoid cysts | Â | |||||
| Â | Â | Tailgut cysts | Â | |||||
| Â | Â | Bronchogenic cyst | Â | |||||
| Â | Â | Pseudomyxoma retroperitonei | Â | |||||
| Â | Â | Perianal mucinous carcinoma | Â | |||||
| Â | Â | Cystic change in solid neoplasms | Â | |||||