The Value of Contrast-Enhanced Ultrasound Classification in Diagnosis of Pancreatic Cystic Lesions

Table 1

CEUS diagnostic criteria for common pancreatic cystic lesions.

Diseases	CEUS criteria	MRI criteria
Pancreatic carcinoma with cyst degeneration	In the arterial phase, lesions enhance later than the pancreatic parenchyma and is hypoenhanced, with signs of metastasis	In the arterial phase, lesions enhance later than the pancreatic parenchyma and is hypoenhanced, with signs of metastasis
SPT	The lesion is ring-shaped and enhanced in the arterial phase, the solid parts can be enhanced, and there are cystic nonenhanced parts inside	The lesion is ring-shaped and enhanced in the arterial phase, and there are cystic parts or calcification or bleeding inside
IPMN	Polycystic lesions are connected to the pancreatic duct, and solid nodules can be seen inside	Polycystic lesions are connected to the pancreatic duct, and solid nodules can be seen inside

SCN: serous cystic neoplasm; MCN: mucinous cystic neoplasm; SPT: solid pseudopapillary tumor; IPMN: intraductal papillary mucinous neoplasm.