We present a case of lymphoepithelial cyst of the pancreas. The cyst showed moderate echogenicity, mimicking a solid lesion on ultrasonography (US), and had a cystic appearance on computed tomography (CT). This ambivalent finding may be a distinctive feature of lymphoepithelial cysts of the pancreas.
Pancreas* ; Ultrasonography

No abstract available.
Diagnosis* ; Pancreas* ; Ultrasonography*

Studying on 35 patients were preoperative diagnosed as pancreatic adenocarcinoma received operations in ViÖt §øc hospital during 2000-2001 showed that: 29 patients with pancreatic adenocarcinoma and 6 patients without the disease. The two dimensional ultrasound found 18 cases (62%) with specificity (50%) and correct (60%), value of positive predict (85.7%). The rate of precise diagnosis of two dimensional ultrasound, CT scanner, and endoscopic ultrasound were 60%, 72.7%, and 83.3%, respectively.
Adenocarcinoma ; Pancreas ; Endosonography ; Ultrasonography

From April 1998 to June 2001, ultrasound had diagnosed the tumors at the pancrea head in 80 patients and they were operated at Viet Duc Hospital. Among these subjects, there were 43 tumors of pancrea head, 14 tumors of inferior part of common bile duct, 18 tumors ooffvater ampulla, 2 tumors of duodenal, 2 chronical pancreatitis and 1 unspecific fibroma of liver external bile duct. Among 77 patients of tumor of pancrea head definitely diagnosed, there are 3 falsely positive cases and 3 negative cases by ultrasound. In 48 patients invasive structures in vessal bundle of superior mesenteriolum were diagnosed by surgery. Thus detecting pancrea head tumors, ultrasonic technique is a convenient and simple method with a sensibility of 96.1%
Pancreas ; Pancreatic Neoplasms ; ultrasonography ; diagnosis

Lymphoepithelial cyst of the pancreas is a very rare lesion of unknown etiology. It is difficult, on the basis of radiologic images, to differentiate between lymphoepithelial cyst and pancreatic pseudocyst or other cystic neoplasms, particularly if these are mucinous. We describe the sonographic and CT findings in a case of surgically proven lymphoepithelial cyst of the pancreas.
Mucins ; Pancreas* ; Pancreatic Pseudocyst ; Ultrasonography

BACKGROUND/AIMS: The treatment of choice of intraductal papillary mucinous neoplasm (IPMN) is partial pancreatic resection with complete excision of this potentially malignant lesion, thus preserving sufficient pancreatic tissue to ensure endocrine and exocrine functions. This strategy, however, requires a reliable preoperative assessment of the highly variable extension of IPMN. We performed this study to determine the role of intraductal ultrasonography (IDUS) in predicting the extension of IPMN and selecting the resection methods of pancreas. METHODS: A preoperative assessment of IPMN by IDUS was performed in 12 patients who underwent a surgical resection of IPMN. According to the preoperative localization of IPMN by IDUS, various types of limited pancreatic resections were planned. The histologic examination of the frozen section of the pancreatic cut surface was performed in all patient. In the cases of tumor involvement as cut surface margin, a modification of the planned pancreatic resection was done. RESULTS: Technical success was achieved in all 12 cases (100%). There were positive tumor margin of cut surfaces in 2 patients. Of 10 cases whose frozen tissue evaluation of the pancreatic cut surface had been negative at first, one patieat has turned out to be margin positive in permanent section examination, finally. Overall accuracy of IDUS in predicting the continuous extension of IPMN was 75%. CONCLUSIONS: IDUS is a reliable diagnostic modality to guide the resection extent of the pancreas in patients with IPMN.
Frozen Sections ; Humans ; Mucins* ; Pancreas* ; Ultrasonography*

An isolated pyogenic pancreatic abscess (IPPA) without pancreatitis is extremely rare but can occur in patients with uncontrolled diabetes. This pathologic condition poses a clinical challenge in diagnosis and management because it can be confused easily with a malignancy. Endoscopic ultrasound (EUS) may be a useful diagnostic modality for indeterminate pancreatic lesions and IPPA. Here, we report two cases with elevated carbohydrate antigen 19-9 levels and pancreatic masses on cross sectional imaging. The patients were subsequently diagnosed with IPPA by EUS. EUS-guided drainage was performed successfully and the patients' clinical symptoms and radiologic findings improved. In our experience, EUS and EUS-guided drainage are crucial steps for the diagnosis and management of patients with an indeterminate pancreatic lesion. In addition, EUS-guided drainage has excellent technical and clinical outcomes for the treatment of IPPA.
Abscess* ; Diagnosis ; Drainage* ; Humans ; Pancreas ; Pancreatitis ; Ultrasonography

Of the various endocrine tumors affecting the pancreas, insulinomas and gastrinomas are the most common. In order to facilitate surgery, the localization of tumor is important. However, at the first time of presentation, the localization of tumor was often difficult by CT or ultrasonography because the tumor was relatively too small. The introduction of endoscopic ultrasonography has allowed high-resolution imaging of the pancreas that distinguishes structures as small as 2 to 3 mm in diameter. Thus, it has became easier to detect the lesion site of pancreatic endocrine tumor by endoscopic ultrasonography. We report the 5 patients who had pancreatic insulinoma which were detected and localized by endoscopic ultrasonography.
Endosonography* ; Gastrinoma ; Humans ; Insulinoma* ; Pancreas ; Ultrasonography

Of the various endocrine tumors affecting the pancreas, insulinomas and gastrinomas are the most common. In order to facilitate surgery, the localization of tumor is important. However, at the first time of presentation, the localization of tumor was often difficult by CT or ultrasonography because the tumor was relatively too small. The introduction of endoscopic ultrasonography has allowed high-resolution imaging of the pancreas that distinguishes structures as small as 2 to 3 mm in diameter. Thus, it has became easier to detect the lesion site of pancreatic endocrine tumor by endoscopic ultrasonography. We report the 5 patients who had pancreatic insulinoma which were detected and localized by endoscopic ultrasonography.
Endosonography* ; Gastrinoma ; Humans ; Insulinoma* ; Pancreas ; Ultrasonography

Ultrasound elastography (USE) of the pancreas allows pancreatic tissue stiffness assessment by virtual palpation. Two main types of USE are used. For the pancreas strain elastography applying by endoscopic ultrasound has been established for the characterisation of small solid pancreatic lesions (SPL). In larger SPL >30 mm the results are less convincing mainly due to the heterogenicity of the lesions but also by concomitant changes of the surrounding pancreatic parenchyma. The current role of shear wave elastography has to be determined. This article reviews the current use of elastography of the pancreas.
Elasticity Imaging Techniques ; Palpation ; Pancreas ; Ultrasonography