Normal wall thickness and tumorous changes in the gastrointestinal tract detected by CT (In German)

Abstract The main goal of this study was to design and propose specific abdominal zones that would contain the gastrointestinal organs in healthy cattle when scanned with trans-abdominal ultrasound. The second goal was to measure the intestinal wall thicknesses of the cranial duodenum, jejunum and colon and to compare healthy cattle intestinal wall thicknesses with pathological cases. All of the six healthy cattle had organs located in the zones proposed. Three of the four pathological cases had organs outside of the zones proposed. The six healthy cattle had an average cranial duodenum wall thickness of 2.45 mm, an average jejunum wall thickness of 1.90 mm and an average colon wall thickness of 3.02 mm. Of the pathological cases, three out of four had intestinal walls that were thicker than that of the average values for the healthy cattle. The thickest intestinal walls were found in the paratuberculosis positive cow. This cow had a cranial duodenum wall thickness of 9.5 mm, a jejunum wall thickness of 4.9 mm and a colon wall thickness of 10.0 mm. In conclusion, trans-abdominal ultrasonography has the potential to be an ideal diagnostic tool for the investigation of the bovine gastrointestinal tract and gastrointestinal disorders such as abscesses, peritonitis and displacement of the abomasum. Trans-abdominal ultrasound also has the potential to be a non-painful, non-invasive tool for the diagnosis of proliferative intestinal inflammations in cattle.

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ALGORITHM FOR EXAMINING PATIENTS WITH PATHOLOGY OF THE UPPER GASTROINTESTINAL TRACT USING MULTISPIRAL COMPUTED TOMOGRAPHY

Acta medica Eurasica ◽

10.47026/2413-4864-2021-1-18-32 ◽

2021 ◽

pp. 18-32

Author(s):

Anastasiya N. Dmitrieva

Keyword(s):

Computed Tomography ◽

Gastrointestinal Tract ◽

Wall Thickness ◽

Normal Condition ◽

Threshold Value ◽

Esophageal Wall ◽

External Diameter ◽

Light Speed ◽

Chuvash Republic ◽

Upper Gastrointestinal

The aim of the study was to develop a technique for conducting multispiral computed tomography (MSCT) when examining the upper parts of the gastrointestinal tract. A prospective analysis of MSCT images was performed in 85 people who were examined at the AI "Republican Clinical Oncology Dispensary" under the Ministry of Public Health of the Chuvash Republic in 2015-2019. All patients underwent computed tomography using Light Speed VEX Plus and Light Speed RT 16 devices ("GE", USA) using our modified esophageal and gastric MSCT technique with an emphasis on the esophageal-gastric junction (EGJ). The characteristic quantitative MSCT-signs of the esophageal wall, the stomach, and the EGJ area in the norm, as well as the ones in an abnormal esophageal wall in esophagitis and gastritis are presented. The esophageal wall thickness in the normal condition and esophagitis was 3.12±0.69 mm and 8.16±1.65 mm (p = 0.000, R=0.909), and the maximum external diameter of the abdominal part of esophagus was 14.2±1.68 mm and 17.96±3.7 mm (p = 0.000, R = 0.579), respectively. The ROC analysis revealed a threshold value equal to 5.5 mm for distinguishing the wall thickness values characteristic for the unchanged esophagus and the esophagus with inflammatory pathology (sensitivity-96%, specificity-100%, p = 0.000). The threshold value for the external diameter of the abdominal esophageal segment was 17.5 mm (sensitivity – 64%, specificity – 100%, p = 0.000). The thickness of the stomach wall in the normal condition and in gastritis made 4.6±0.48 mm and 7.52±2.71 mm (p = 0.000, R = 0.673), respectively. At this, the threshold value of this characteristic was equal to 5.5 mm (sensitivity – 87.1%, specificity – 100%). The wall thickness in the area of the cardia in the normal condition was 5.4±1.01 mm, in presence of inflammation – 10.36±1.85 mm (p = 0.000, R = 0.858), the threshold value – 7.5 mm (sensitivity – 95.83%, specificity – 98.04%, p = 0.000). The thickness of individual layers in the unchanged stomach walls did not exceed 2 mm, the thickness of the mucosa was 1.01±0.11 mm.

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Habitat Association of Klebsiella Species

Infection Control ◽

10.1017/s0195941700062603 ◽

1985 ◽

Vol 6 (2) ◽

pp. 52-58 ◽

Cited By ~ 111

Author(s):

Susan T. Bagley

Keyword(s):

Drinking Water ◽

Gastrointestinal Tract ◽

Surface Waters ◽

Industrial Effluents ◽

Opportunistic Pathogen ◽

Habitat Associations ◽

Habitat Association ◽

Klebsiella Species ◽

Almost All ◽

Polluted Waters

AbstractThe genus Klebsiella is seemingly ubiquitous in terms of its habitat associations. Klebsiella is a common opportunistic pathogen for humans and other animals, as well as being resident or transient flora (particularly in the gastrointestinal tract). Other habitats include sewage, drinking water, soils, surface waters, industrial effluents, and vegetation. Until recently, almost all these Klebsiella have been identified as one species, ie, K. pneumoniae. However, phenotypic and genotypic studies have shown that “K. pneumoniae” actually consists of at least four species, all with distinct characteristics and habitats. General habitat associations of Klebsiella species are as follows: K. pneumoniae—humans, animals, sewage, and polluted waters and soils; K. oxytoca—frequent association with most habitats; K. terrigena— unpolluted surface waters and soils, drinking water, and vegetation; K. planticola—sewage, polluted surface waters, soils, and vegetation; and K. ozaenae/K. rhinoscleromatis—infrequently detected (primarily with humans).

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