What is phlegmon in appendicitis?
A phlegmon is an inflammatory tumor consisting of the inflamed appendix, its adjacent viscera and the greater omentum, whereas an abscess is a pus-containing appendiceal mass[27-31].
What is phlegmon vs abscess?
abscess. The difference between phlegmon and abscess is as follows: A phlegmon is unbounded and can keep spreading out along connective tissue and muscle fiber. An abscess is walled in and confined to the area of infection.
Can a ruptured appendix be seen on a CT scan?
Conclusion: CT scan is 69% sensitive and 97% specific for the diagnosis of perforated appendicitis and constellation of CT findings can be used to select patients with perforated appendicitis for initial non-operative management.
What can be mistaken as an appendix on CT?
CT features of caecal diverticulitis include pericaecal fat stranding, wall thickening, visualization of diverticula and potentially abscesses. Due to the proximity of the appendix, caecal diverticulitis can be misdiagnosed as appendicitis if there is associated reactive inflammatory changes of the appendix.
What is a phlegmon in medical terms?
Phlegmon is defined as inflammation of soft tissues with no liquid component or pus. From: Spine Surgery (Third Edition), 2005.
How can you tell the difference between complicated and uncomplicated appendicitis?
Simple or uncomplicated appendicitis is defined as a phlegmonous inflamed appendix without signs of necrosis or perforation, whereas complex or complicated appendicitis has focal or transmural necrosis, which eventually may lead to perforation.
Is a CT scan necessary for appendicitis?
If the diagnosis of acute appendicitis is clear from the history and physical examination, no further testing is needed. When the diagnosis of appendicitis is uncertain, computed tomography (CT) and ultrasonography may reduce the rate of perforation.
How accurate is a CT scan for appendicitis?
COMPUTED TOMOGRAPHY CT is more precise than ultrasonography and more reproducible from hospital to hospital (Figures 3 through 5). It has a diagnostic accuracy rate for acute appendicitis of 93 to 98 percent.
How accurate are CT scans for appendicitis?
Which CT scans are used in the workup of appendicitis?
Axial (A) and coronal reformatted (B) CT scans obtained after oral and IV contrast administration show distended appendiceal lumen caused by abnormal mucus accumulation (arrows). Small cecal and appendicular carcinomas can occlude the appendicular lumen, causing secondary appendicitis.
What does the Yellow Line mean on a CT scan of Appendix?
The yellow line encircles the reactive wall thickening of the adjacent ileum loop. The green arrows point to reactive sigmoid wall thickening. The white line encloses an air-containing abscess cavity. The blue circle shows inflamed appendix, with foci of mural discontinuity (red arrows).
What is graded-compression sonography for the evaluation of suspected appendicitis?
In the mid 1980s, graded-compression sonography emerged as a promising imaging technique for the evaluation of suspected appendicitis, especially in children [ 11 – 18 ]. Sonography is a noninvasive, rapid, widely available, and relatively inexpensive technique.
What is appendiceal thickening on CT scan?
One of the CT hallmarks of acute appendicitis is appendiceal thickening (Figs. 3 and 4). Most authors have extrapolated from the sonography literature on appendicitis [27] and define appendiceal thickening on CT as outer-wall-to-outer-wall transverse diameter greater than 6 mm.