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Gastric adenoma with atypical appearance: findings on double-contrast barium study with histopathologic correlation (2000)

Kim, S. H. ; Han, J. K. ; Yoon, C. J. ; [et al.]

Springer

Abdominal imaging 25 (2000), S. 124-128

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ISSN: 1432-0509

Keywords: Key words: Stomach—Atypical—Adenoma—Depressed—Flat—Double-contrast barium study.

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Abstract Background: To describe the radiologic findings of nonpolypoid gastric adenomas and to correlate them with pathologic findings. Methods: During a 9-year period, we reviewed 49 pure gastric adenomas in 43 patients with positive radiologic findings. Of these adenomas, seven with atypical polypoid appearance were retrospectively included in the study. We reviewed these findings with double-contrast barium study and correlated them with the pathologic findings. Results: Of seven nonpolypoid adenomas, four were depressed and three were flat at pathologic examination. All were diagnosed as early gastric carcinoma (five as type IIc, one as type IIb, one as type IIa + IIc) in upper gastrointestinal series. Three were located in the gastric angle, two in the lower body, and two in the antrum. Size ranged from 10 mm to approximately 25 mm (mean = 15 mm). Six lesions had nodular surface and five had convergency of the mucosal folds. A shallow depressed area was seen in six lesions. Conclusions: A considerable proportion of gastric adenomas presents as a depressed or flat lesion on double-contrast barium study because of histologic characteristics of decreased subjacent mucosa. Because the nonpolypoid adenoma has a greater potentional for malignancy, more precaution is needed during the follow-up of this uncommon lesion.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/s002619910029

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Aqueous dispersion of polyurethane anionomers from H12MDI/IPDI, PCL, BD, and DMPA (1994)

Kim, B. K. ; Kim, T. K. ; Jeong, H. M.

New York, NY [u.a.] : Wiley-Blackwell

Journal of Applied Polymer Science 53 (1994), S. 371-378

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ISSN: 0021-8995

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: Polyurethane anionomer dispersions were prepared from hydrogenated diphenylmethane diisocyanate (H12MDI) or isophorone diisocyanate (JPDI), poly(caprolactone) (PCL) diol, 1,4-butane diol (BD), and dimethylolpropionic acid (DMPA). Upon neutralization of the DMPA with triethylamine (TEA), the NCO-terminated polyurethane (PU) ionomers were self-emulsified by adding water, followed by chain extension using triethylenetetramine (TETA) in aqueous media. Polyurethanes from H12MDI showed coarser dispersion and better tensile properties over those from IPDI. Polyurethanes prepared by the one-shot method had better dispersion and tensile properties over those by the two-shot method. When some of the PCL diol was replaced by DMPA or BD, tensile strength increased and ductility decreased due mainly to the increased chain rigidity and intermolecular forces. © 1994 John Wiley & Sons, Inc.

Additional Material: 6 Ill.