## Abstract Pancreatic lymphoepithelial cysts (LECs) are rare pancreatic cystic lesions filled with keratinized material, lined by mature, keratinizing squamous epithelium and surrounded by lymphoid tissue containing few lymphoid follicles. We report two cases of surgically confirmed pancreatic LEC
The normal pancreas: Acoustic characteristics and frequency of imaging
β Scribed by Roy A. Filly; Stuart S. London
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- English
- Weight
- 348 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0091-2751
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β¦ Synopsis
Abstract
This article reports the results of a study designed to evaluate both pancreatic echogenicity and success of visualizing recognizable pancreatic tissue. The acoustic characteristics of the normal pancreas were compared with those of the liver. Of 100 scans reviewed, 65 scans (65 percent) depicted recognizable pancreatic tissue. Two cases were discarded on the basis of hepatocellular disease, and one case was discarded because of hepatic metastases. Thirtyβtwo cases demonstrated pancreatic echogenicity greater than that of the liver, and 30 cases demonstrated pancreatic echogenicity equivalent to that of the liver. We found no normal pancreas that displayed less echogenicity than the liver. A hypothesis is offered to explain the observed results.
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## Abstract The acoustic impedance of bovine femoral cortical bone was measured with a scanning acoustic microscope used in the reflection mode. The bone was measured in the unimbeded state and after plastic imbedding. The acoustic impedance of the unimbedded specimens was also measured with a stan