Appendicitis: usefulness of color Doppler US.

Lim, Hyo Keun; Lee, W J; Kim, T H; NamGung, Seong-Eun; Lee, S J; Lim, Jeffrey

doi:10.1148/radiology.201.1.8816547

Cited by 81 publications

(37 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Our prospective real-time US assessment of the appendix and of inflammatory changes in the right lower abdominal quadrant was based on a set of eight criteria derived from reports in the literature (9,15,16): enlarged appendix, fluid in the appendiceal lumen, lack of compressibility of the appendix, color in the appendiceal wall on color Doppler US images, inflammatory changes in perienteric fat in the right lower quadrant, cecal wall thickening, right lower quadrant lymph nodes, and peritoneal fluid. The appendix was considered enlarged when its outer anteroposterior diameter under compression, measured in the transverse plane, was 6 mm or larger.…”

Section: Discussionmentioning

confidence: 99%

Appendicitis: Evaluation of Sensitivity, Specificity, and Predictive Values of US, Doppler US, and Laboratory Findings

Kessler¹,

Cyteval²,

Gallix³

et al. 2004

Radiology

237

121

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Appendicitis: Evaluation of Sensitivity, Specificity, and Predictive Values of US, Doppler US, and Laboratory Findings

Kessler¹,

Cyteval²,

Gallix³

et al. 2004

Radiology

237

121

View full text Add to dashboard Cite

show abstract

“…It has been reported that color Doppler sonography can be used to help diagnose early appendicitis. Blood vessels within the inflamed appendix and surrounding mesoappendix show an increase in size and number, which is a sensitive indicator of inflammation [22,23]. Using color Doppler sonography to detect appendicitis can produce a sensitivity of 87%, specificity of 97%, and accuracy of 93% [23].…”

Section: Discussionmentioning

confidence: 99%

Abdominal Sonography Screening of Clinically Diagnosed or Suspected Appendicitis before Surgery

Chen

Wang

et al. 1998

World j. surg.

View full text Add to dashboard Cite

We conducted a prospective study to evaluate the value of abdominal sonography in the diagnosis of acute appendicitis and determine the need for abdominal sonography before operation. Altogether 191 patients with clinically diagnosed or suspected appendicitis underwent an abdominal sonography examination performed by a staff surgeon before operation. The sonographic findings are classified into three categories: appendicitis, other diseases, or normal screening. A total of 158 patients (82.7%) with positive findings of appendicitis proceeded to surgery; 18 patients (9.4%) were found to have other diseases, and they were treated for their conditions; and 15 patients (7.9%) with normal screening were discharged from the hospital and were reevaluated 2 weeks later. Only one patient had a false-negative finding. Of the 158 patients undergoing operation, 143 (90.5%) were proved to have appendicitis by the pathologic reports. A total of 32 negative appendectomies (16.8%) were prevented after sonographic examination. Abdominal sonography for detecting acute appendicitis had a sensitivity of 99.3%, a specificity of 68.1%, an accuracy of 91.6%, a positive predictive value of 90.5%, and a negative predictive value of 97.0%. The value of meticulous history-taking, physical examination, and laboratory tests cannot be overemphasized. Our experience suggests that patients with clinically diagnosed or suspected acute appendicitis should routinely undergo abdominal sonography examination, performed by an experienced surgeon, to further decrease the negative appendectomy rates.

show abstract

“…A Without intravenous contrast, an ill-defined area of soft-tissue attenuation with a central focus of low attenuation is seen in the right lower quadrant (arrows). B Contrast enhancement of the wall of the appendix (arrows) helps distinguish it from adjacent edema provides a noninvasive method of assessing hyperemia in the inflamed appendix and surrounding tissues [16,17,18]. The color flow pattern changes during the course of appendicitis, from hypervascularity of the inflamed portion of the appendix in the acute stage to decreasing vascularity as necrosis and perforation ensue.…”

Section: Need For Contrast Administrationmentioning

confidence: 99%

The use of advanced imaging for appendicitis in children

John

2000

Emergency Radiology

View full text Add to dashboard Cite

Improved resolution of late-generation CT and US technology has fostered an increased reliance on imaging for the preoperative diagnosis or exclusion of appendicitis. Both modalities have been shown to have a high accuracy rate, but certain diagnostic challenges persist. CT has largely replaced US for the diagnosis of appendicitis in adults, but the modality of choice is less clear in children. US is usually more easily and rapidly performed in young patients, obviating the need for contrast administration and sedation. Ionizing radiation exposure is avoided with US. Assessment of physical signs and symptoms can be achieved while performing US, an advantage over CT. However, US is best interpreted during performance of the examination, and thus CT is often favored when the interpreter is in a remote location. Strategies using limited CT to follow an indeterminate US show high diagnostic accuracy. This article discusses the controversy surrounding the optimal imaging approach to acute abdominal pain in children and illustrates some of the challenges encountered with US and CT for the evaluation of appendicitis.

show abstract

Appendicitis: usefulness of color Doppler US.

Abstract: Hyperemia in the wall of the appendix at color Doppler US is a sensitive indicator for inflammation. A simple additional color Doppler US examination may be helpful in the diagnosis of early acute appendicitis when an appendix is well depicted and is equivocal in size at gray-scale US.

Cited by 81 publications

References 0 publications

Appendicitis: Evaluation of Sensitivity, Specificity, and Predictive Values of US, Doppler US, and Laboratory Findings

Appendicitis: Evaluation of Sensitivity, Specificity, and Predictive Values of US, Doppler US, and Laboratory Findings

Abdominal Sonography Screening of Clinically Diagnosed or Suspected Appendicitis before Surgery

The use of advanced imaging for appendicitis in children

Contact Info

Product

Resources

About