胰腺癌影像学表现英语读片ppt课件.ppt

The imaging?manifestation of pancreatic cancer Pancreatic cancer begins in the tissues of the pancreas anatomic structure? Case1 1CT000766 64y Male feel abdominal and back pain Jaundice for 2 months ? Plain scan：A irregular slightly lower density mass is located in the? head of the pancreas. Contrast-enhanced scan（Arterial phase）：the mass was slightly enhanced and the SMA （superior mesenteric artery ）was surrounded by the mass.? Portal venous phase ：The enhancement of the mass is slowly strengthened. CT Imaging findings CT?features:?1?pancreatic?parenchymal mass,?as its main?features.?Tumor?morphology for the oval,?lobulated or?irregular?mass,?irregular margin,?and the?boundary of??pancreatic tissue?is not clear. 2. Pancreatic?contour,?contour?and size?change is?another?important sign Bile duct and pancrea duct?dilation?is an indirect sign Diagnosis Pancreatic?Medium to high?differentiation adenocarcinoma differential diagnosis Chronic?pancreatitis?CT in differential diagnosis of?pancreatic cancer:?The lesion?of pancreatic cancer?multiple?nodes,?limited,?irregular edge ,?liquefied?necrosis,?calcification?is rare.? Pancreatitis?can?be?normal region,?liquefaction?necrosis?is rare,?calcification,?especially along the?duct?to the?distribution of the calcifications?are its important characteristics.?Pancreatitis? bile? duct and pancrea duct dilation of irregular,?often?through the?lesion,?but?not?through the?pancreatic cancer?lesions,??found the?important sign of?metastasis?is also a?differential.? pancreatic cystadenocarcinoma?or?tumor ?when?pancreatic cancer?appeared?liquefaction necrosis?is?larger,?its need to differential. ?pancreatic cystadenocarcinoma?or?tumor?CT showed?cystic mass,?cystic wall?showed?irregular mural nodule,?enhanced?the wall ?and fiber separation?can strengthen,?the central part of?the tumor?calcification ? biliary and pancreatic duct?dilation?or obstruction is rare In MRCP ?? Tuberculosis of pancreas? pancreatic tuberc