text: The appearance of pancreatic cancer relative to normal pancreatic tissue may be hypoechoic, isoechoic or hyperechoic on transabdominal<unk> . An ill defined hypoechoic mass is seen infiltrating into a bright pancreatic parenchyma in majority of the cases. This may be accompanied by pancreatic and biliary duct dilatation.  Endoscopic<unk>  (EUS)  has a higher resolution than transabdominal<unk> , due to the small distance between the endoscope and pancreas through the wall of the duodenum. EUS plays an important role in the preoperative staging of pancreatic cancer  and also has a high efficacy in the detection of tumors smaller than 2 cm, for local T and N staging, and prediction of vascular invasion.  Moreover, EUS-guided fine needle aspiration biopsy (FNA) is the best modality for obtaining a tissue diagnosis.
option_0: Pancreatic cancer ultrasound
option_1: Pancreatic cancer MRI
option_2: Pancreatic cancer biopsy
option_3: Pancreatic cancer CT
option_4: Pancreatic cancer laboratory tests
option_5: Hepatic hemangioma physical examination
option_6: Pancreatic cancer physical examination
option_7: Cholangiocarcinoma physical examination