title: Usefulness of MDCT evaluation of the intraluminal surface of esophageal masses using only effervescent powder without injection of hypotonic agent.
abstract: This study evaluated the inner surface of esophageal masses using multidetector computed tomography (MDCT) after esophageal distention with an ingested effervescent powder without inducing pharmacological esophageal hypotonia. From September 2004 to December 2005, 38 patients underwent MDCT after esophageal distention using only an effervescent powder that was ingested only 35 s after injecting the contrast agent and twice 50 s after the injection. Ten patients had a normal esophagus and twenty-eight patients had an esophageal mass detected by endoscopy. The degree of distention at three levels (upper, middle, and lower) and the intraluminal surface of the esophageal mass were evaluated. The surface between the normal and esophageal mass were analyzed using an ANOVA test. Esophageal distention in the upper and middle thirds was classified as either "good" or "fair" in 90.8% of cases. In the lower third, 81.6% of cases were either "good" or "fair". All esophageal cancers had an irregular surface but all normal lining and benign esophageal masses had a smooth surface. MDCT after esophageal distention using the effervescent powder ingested twice achieved good-to-fair distention in the esophagus, and is a useful diagnostic modality for identifying the intraluminal surface of esophageal masses.
authors.affiliation: Department of Diagnostic Radiology, Chonbuk National University Medical School and Hospital, Research Institute of Clinical Medicine, Jeonju, Republic of Korea. gyjin@chonbuk.ac.kr
authors.forename: Gong Yong
authors.initials: GY
authors.lastname: Jin
authors.forename: Sang Hee
authors.initials: SH
authors.lastname: Park
authors.forename: Young Min
authors.initials: YM
authors.lastname: Han
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D003287:Contrast Media / Q000008:administration & dosage; D003937:Diagnosis, Differential; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D006801:Humans; D007472:Iohexol / Q000008:administration & dosage / Q000031:analogs & derivatives; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011208:Powders / Q000008:administration & dosage; D011446:Prospective Studies; D012680:Sensitivity and Specificity; D017693:Sodium Bicarbonate / Q000008:administration & dosage; D013644:Tartrates / Q000008:administration & dosage; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D003287:Contrast Media; D011208:Powders; D013644:Tartrates; D007472:Iohexol; C038192:iopromide; D017693:Sodium Bicarbonate; C029768:tartaric acid