The Special Sign of MRCP in Carcinoma of Pancreatic Head
- VernacularTitle:胰头癌的MRCP临床诊断的特异征象
- Author:
Yongchang XI
;
Dapeng XI
;
Jisheng ZHAO
;
Xuedong FANG
- Publication Type:Journal Article
- Keywords:
pancreas;
carcinoma of the pancreatic head;
MRCP
- From:
Journal of Practical Radiology
2001;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To research the special manifestations of magnetic resonance cholangiopancreatography(MRCP) in carcinoma of pancreatic head.Methods MRCP in 22 cases with pancreatic head carcinoma confirmed by operation and pathology (including SE sequences with T1WI and fat saturation,FSE with T2WI and fat saturation and MRCP in coronal sectior) were performed before operations.Additional CE MRA on abdominal vessels including abdominal ateries, portal veins and superior mesenteric arteries and their veins in 16 cases also examined before operations. Results Carcinomas of the pancreatic head were diagnosed correctly by MRCP in 21 cases, and 1 case was misdiagnosed as chronic pancreatitis. MRCP all demonstrated abrupt interruption at pancreatic head segments of dilated left common bile duct and main pancreatic duct at the pancreatic head ones, their left segments were dilate with higher signal and both didn't cross each other, because they were destroyed by carcinomas of pancreatic head. Destruction and no cross each other of pancreatic head segments of choledochus and main pancreas duct,it was called "no cross sign". CE MRA demonstrated destruction of abdominal ateries in 3 cases, portal vein in 3 cases and superior mesenteric vein in 4 cases and not being resected.Conclusion "No cross sign"on MRCP examination is of important value in diagnosis of carcinoma of the pancreatic head.
