From: Cystic pancreatic lesions: MR imaging findings and management
WHO classification of cystic pancreatic lesions | |
Epithelial non-neoplastic | Epithelial neoplastic |
 | Mucinous |
 |  Intraductal papillary mucinous neoplasm |
 |  Mucinous cystic neoplasm |
Lymphoepithelial cyst | Â |
Mucinous non-neoplastic cyst | Non-mucinous |
Enterogeneous cyst | Â Serous cystic neoplasm |
Retention cyst/dysontogenetic cyst | Â Solid pseudopapillary neoplasm |
Periampullary duodenal wall cyst | Â Cystic neuroendocrine tumor G1-2 |
Endometrial cyst | Â Acinar cell cystadenoma |
Congenital cyst (in malformation syndromes) | Â Serous cystoadenocarcinoma |
 |  Cystic ductal adenocarcinoma |
 |  Cystic acinar cell carcinoma |
 |  Accessory-splenic epidermoid cyst |
 |  Cystic hamartoma |
 |  Cystic teratoma |
 |  Cystic pancreatoblastomas |
 |  Cystic metastatic epithelial neoplasm |
 |  Others |
Non-epithelial non-neoplastic | Non-epithelial neoplastic |
Walled-off necrosis | Benign non-epithelial neoplasms (e.g., lymphangioma) |
Pancreatitis-associated pseudocyst | Â |
Parasitic cyst | Malignant non-epithelial neoplasms (e.g., sarcomas) |