In vivo and ex vivo confocal endomicroscopy of pancreatic cystic lesions: A prospective study

Table 2 Classification, description, and associated cyst type confocal laser endomicroscopy image patterns

Variable	Explanation of patterns	Cyst type where pattern is observed
Papillae	A papilla is a finger-like projection of variable length consisting of an overlying epithelium and underlying vascular core	IPMN
Epithelial bands	Epithelial bands are either single or multiple layers of epithelium without a papillary configuration. These bands demonstrated layering or a horizon-type configuration	MCN
Trabecular pattern	Nests of cells separated by blood vessels of fibrous bands	Cystic-NET
Fern pattern	A concentrated network of parallel vessels emanating from a central vessel similar to a fern-leaf	SCA

PCL: Pancreatic cystic lesion; IPMN: Intraductal papillary mucinous neoplasm; MCN: Mucinous cystic neoplasm; Cystic-NET: Cystic neuroendocrine tumor; SCA: Serous cystadenoma.