Classification of acute appendicitis (CAA): treatment directed new classification based on imaging (ultrasound, computed tomography) and pathology

2021 ◽  
Author(s):  
Jörg C. Hoffmann ◽  
Claus-Peter Trimborn ◽  
Michael Hoffmann ◽  
Ralf Schröder ◽  
Sarah Förster ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Acute Appendicitis ◽  
New Classification ◽  
Ultrasound Computed Tomography

scholarly journals Mucinous Neoplasm of the Appendix as a Mimic of Cystic Adnexal Pathology

2018 ◽  
Vol 8 ◽  
pp. 32 ◽  
Author(s):  
Chris Hutchinson ◽  
Jonathan Lyske ◽  
Vimal Patel ◽  
Gavin Low
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Mucinous Tumor ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Mucinous Neoplasm ◽  
Ultrasound Computed Tomography ◽  
Adnexal Pathology

Pelvic pain presents a common diagnostic conundrum with a myriad of causes ranging from benign and trivial to malignant and emergent. We present a case where a mucinous neoplasm of the appendix acted as a mimic for tubular adnexal pathology on imaging. With the associated imaging findings on ultrasound, computed tomography, and magnetic resonance imaging, we wish to raise awareness of mucinous tumors of the appendix when tubular right adnexal pathology is present both in the presence of pelvic or abdominal pain or when noted incidentally. Tubular pathology such as uncomplicated paraovarian cysts or hydrosalpinx is frequently treated conservatively with long-interval follow-up imaging or left to clinical follow-up. Thus, if incorrectly diagnosed as tubular pathology, an appendix mucocele or mucinous neoplasm of the appendix is likely to be undertreated. We wish to clarify some of the confusion around nomenclature and classification of the multiple entities that are comprised by the terms mucocele and mucinous tumor of the appendix.

New classification of dynamic computed tomography images predictive of malignant characteristics of hepatocellular carcinoma

2010 ◽  
Vol 40 (10) ◽  
pp. 1006-1014 ◽  
Author(s):  
Yusuke Kawamura ◽  
Kenji Ikeda ◽  
Miharu Hirakawa ◽  
Hiromi Yatsuji ◽  
Hitomi Sezaki ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Hepatocellular Carcinoma ◽  
Dynamic Computed Tomography ◽  
New Classification ◽  
Computed Tomography Images

scholarly journals New Classification of Nasal Bone Fractures Using Computed Tomography and Its Clinical Application

2005 ◽  
Vol 16 (2) ◽  
pp. 270-274
Author(s):  
Chan Hum Park ◽  
Byoung Yuk Min ◽  
Hyung Ro Chu ◽  
Jun Ho Lee ◽  
Ki Hyun Chang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Clinical Application ◽  
Bone Fractures ◽  
Nasal Bone ◽  
New Classification

scholarly journals Development of a New Therapy-Oriented Classification of Intervertebral Vacuum Phenomenon With Evaluation of Intra- and Interobserver Reliabilities

2020 ◽  
pp. 219256822091300 ◽  
Author(s):  
Gaston Camino Willhuber ◽  
Mariana Bendersky ◽  
Franco L. De Cicco ◽  
Gonzalo Kido ◽  
Matias Pereira Duarte ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Low Back Pain ◽  
Back Pain ◽  
Kappa Statistics ◽  
Low Back ◽  
Computed Tomography Scan ◽  
New Classification ◽  
Vacuum Phenomenon ◽  
Tomography Scan

Study Design: Diagnostic study, level of evidence III. Objectives: Low back pain is a common cause of disability among elderly patients. Percutaneous discoplasty has been developed as a tool to treat degenerative disease when conservative management is not successful. Indications for this procedure include low back pain and the presence of vacuum phenomenon. The objective of this study was to describe a new classification of vacuum phenomenon based on computed tomography scan in order to improve the indications for percutaneous discoplasty. Methods: We developed a classification of vacuum phenomenon based on computed tomography scan images. We describe 3 types of vacuum based on the relationship between vacuum and the superior/inferior endplates and 2 subtypes based on the presence of significant subchondral sclerosis. A validation study was conducted selecting 10 orthopedic residents with spine surgery training to analyze 25 vacuum scenarios. Inter- and intraobserver reliabilities were assessed through the Fleiss’s and Cohen’s kappa statistics, respectively. Results: The overall Fleiss’s κ value for interobserver reliability was 0.85 (95% CI 0.82-0.86) in the first reading and 0.93 (95% CI 0.92-0.95) in the second reading. Cohen’s κ for intraobserver reliability was 0.88 (95% CI 0.77-0.99). Conclusion: The new classification has shown almost perfect inter- and intraobserver reliabilities for grading the vacuum phenomenon and could be an important tool to improve the indications for percutaneous cement discoplasty.

New information on Lethiscus stocki (Tetrapoda: Lepospondyli: Aistopoda) from high-resolution computed tomography and a phylogenetic analysis of Aistopoda

2003 ◽  
Vol 40 (8) ◽  
pp. 1071-1083 ◽  
Author(s):  
Jason S Anderson ◽  
Robert L Carroll ◽  
Timothy B Rowe
Keyword(s):  
Computed Tomography ◽  
Phylogenetic Analysis ◽  
High Resolution ◽  
Entire Length ◽  
Serial Sectioning ◽  
New Classification ◽  
High Resolution Computed Tomography ◽  
Lower Jaw ◽  
New Information

High-resolution computed tomography provides an alternative to serial sectioning and other destructive techniques of studying fossils (data available at http://www.DigiMorph.org). This technology was used to study the oldest aistopod Lethiscus stocki. The fossil is found to have approximately 30 closely spaced teeth on its maxilla and dentary, a short vomer, a palatine running nearly the entire length of the maxilla that is toothed at least posteriorly, and a choana that is located at the premaxilla–maxilla suture. It has a lower jaw with a high articlular facet for the quadrate condyle; a lateral fossa for the adductor musculature, superficially similar to the mammalian masseteric fossa; and a sutural pattern that closely resembles that of Oestocephalus. Previously reported pectoral elements are not evident in the scans and may be best interpreted as fractures on the surface of the nodule associated with sedimentary inclusions. Relationships among all relatively complete aistopods were analyzed using parsimony. Two most parsimonious trees were found, differing in the arrangement of the outgroup taxa. Phlegethontia and Pseudophlegethontia are found to be sister taxa to Coloraderpeton and Oestocephalus, with Ophiderpeton and Lethiscus placed as successively more distant taxa. This topology renders Ophiderpetontidae, as previously conceived, paraphyletic. Lethiscus is confirmed to be the most basal aistopod. A new classification of Aistopoda is presented. This study shows that the palatoquadrate of higher aistopods is derived in-group, which is consistent with the trends in aistopods of peramorphosis in the endochondral skeleton and paedomorphosis in the dermal skeleton.

scholarly journals A new classification of cross-sectional root canal shape changes, a cone-beam computed tomography study

2020 ◽  
Author(s):  
Svetlana Razumova ◽  
Anzhela Brago ◽  
Haydar Barakat ◽  
Ammar Howijieh ◽  
Yuliya Kozlova ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Age Groups ◽  
Cone Beam ◽  
New Classification ◽  
Cross Sectional ◽  
The Cross ◽  
Shape Changes

Abstract Background: The root canal system is considering the most important factor in endodontic treatment, due to the complexity of its anatomy and morphology. The aim of this study was to present a new classification of root canal shape changes in three thirds (coronal, middle, apical) in different age groups using cone-beam computed tomography scanning.Materials and methods: 300 CBCT scans for patient aged 20-70 were evaluated to study the morphology of the cross-sectional root canal shape in coronal, middle and apical thirds among three age groups; young (20-44), middle (45-59) and elderly (60-70). The root canal shape was classified as follow: round, oval, ribbon. Results: The cross-sectional root canal shape was identified in two groups: canals with an unchanging (constant) shape and canals with changing shape. In turn, in canals with changing shape, the change could be identified in the region of the middle or apical thirds of the canal. The results showed that root canal shape changes in two cases: 1) the presence of one or more canals in the root (with or without isthmus between them), 2) with age, as it was observed that the cross-sectional shape of the root canal becomes round in the apical third with age.Conclusion: A new classification of the changes of root canal shape in three thirds (coronal, middle, apical) was presented in this study.

scholarly journals New Classification of Lung Nodules Based on Ground-glass Opacity on High-Resolution Computed Tomography.

Haigan ◽  
2001 ◽  
Vol 41 (3) ◽  
pp. 207-211 ◽  
Author(s):  
Keiko Kuriyama ◽  
Miki Nishikubo ◽  
Mitsuko Tsubamoto ◽  
Jun Arisawa ◽  
Chikazumi Kuroda ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Ground Glass Opacity ◽  
Ground Glass ◽  
Lung Nodules ◽  
New Classification ◽  
High Resolution Computed Tomography
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