Volvulus diagnostic study of choice: Difference between revisions

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{{Volvulus}}
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== Overview ==
==Overview==
* The page name should be '''"[Disease name] diagnostic study of choice"''', with only the first letter of the title capitalized. Note that the page is called "Diagnostic study of choice."
Abdominal CT is the diagnostic study of choice for suspected volvulus. Findings with CT include a whirl pattern denoting a dilated colon segment and a bird beak appearance of the afferent and efferent segment of colonic segments.
* '''Goal:'''
**To describe the most efficient/sensitive/specific test that is utilized for diagnosis of [disease name].
**To describe the gold standard test for the diagnosis of [disease name].
**To describe the diagnostic criteria, which may be based on clinical findings, physical exam signs, pathological findings, lab findings, findings on imaging, or even findings that exclude other diseases.
* As with all microchapter pages linking to the main page, at the top of the edit box put <nowiki>{{CMG}}</nowiki>, your name template, and the microchapter navigation template you created at the beginning.
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* Remember to follow the same format and capitalization of letters as outlined in the template below.
* You should include the name of the disease in the first sentence of every subsection.


== Diagnostic Study of Choice ==
==Diagnostic Study of Choice==


===== Template statements =====
===Gold standard/Study of choice:===
*Abdominal CT is the gold standard test for the diagnosis of volvulus.<ref name="pmid8661573">{{cite journal |vauthors=Catalano O |title=Computed tomographic appearance of sigmoid volvulus |journal=Abdom Imaging |volume=21 |issue=4 |pages=314–7 |year=1996 |pmid=8661573 |doi= |url=}}</ref><ref name="pmid20028915">{{cite journal |vauthors=Levsky JM, Den EI, DuBrow RA, Wolf EL, Rozenblit AM |title=CT findings of sigmoid volvulus |journal=AJR Am J Roentgenol |volume=194 |issue=1 |pages=136–43 |year=2010 |pmid=20028915 |doi=10.2214/AJR.09.2580 |url=}}</ref>
*The following result of abdominal CT is confirmatory of volvulus:
**Whirl pattern signifying a dilated colon
**Bird beak appearance of afferent and efferent colonic segments
*The abdominal CT should be performed when:
**The patient presented with symptoms of abdominal pain, distension, constipation/obstipation and nausea.


=== Gold standard/Study of choice: ===
====Diagnostic study of choice for volvulus====
* [Name of the investigation] is the gold standard test for the diagnosis of [disease name].
* The following result of [gold standard test] is confirmatory of [disease name]:
** Result 1
** Result 2
* The [name of investigation] should be performed when:
** The patient presented with symptoms/signs 1. 2, 3.
** A positive [test] is detected in the patient.
* [Name of the investigation] is the gold standard test for the diagnosis of [disease name].
* The diagnostic study of choice for [disease name] is [name of investigation].
* There is no single diagnostic study of choice for the diagnosis of [disease name].
* There is no single diagnostic study of choice for the diagnosis of [disease name], but [disease name] can be diagnosed based on [name of the investigation 1] and [name of the investigation 2].
* [Disease name] is mainly diagnosed based on clinical presentation.
* Investigations:
** Among patients who present with clinical signs of [disease name], the [investigation name] is the most specific test for the diagnosis.
** Among patients who present with clinical signs of [disease name], the [investigation name] is the most sensitive test for diagnosis.
** Among patients who present with clinical signs of [disease name], the [investigation name] is the most efficient test for diagnosis.
 
==== The comparison table for diagnostic studies of choice for [disease name] ====
{|
{|
|- style="background: #4479BA; color: #FFFFFF; text-align: center;"
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<small> ✔= The best test based on the feature </small>
<small> ✔= The best test based on the feature </small>


===== Diagnostic results =====
=====Sequence of Diagnostic Studies=====
The following result of [investigation name] is confirmatory of [disease name]:
The abdominal CT should be performed when:
* Result 1
*The patient presented with symptoms of abdominal pain, abdominal distension, nausea and constipation.
* Result 2
*This is also done to rule out other causes of intestinal obstruction and abdominal pain.
 
===== Sequence of Diagnostic Studies =====
The [name of investigation] should be performed when:
* The patient presented with symptoms/signs 1, 2, and 3 as the first step of diagnosis.
* A positive [test] is detected in the patient, to confirm the diagnosis.


=== Diagnostic Criteria ===
===Diagnostic Criteria===
* Here you should describe the details of the diagnostic criteria.
*Volvulus is mainly diagnosed based on clinical presentation.  
*Always mention the name of the criteria/definition you are about to list (e.g. modified Duke criteria for diagnosis of endocarditis / 3rd universal definition of MI) and cite the primary source of where this criteria/definition is found.
*There are no established criteria for the diagnosis of volvulus.
*Although not necessary, it is recommended that you include the criteria in a table. Make sure you always cite the source of the content and whether the table has been adapted from another source.
*Be very clear as to the number of criteria (or threshold) that needs to be met out of the total number of criteria.
*Distinguish criteria based on their nature (e.g. clinical criteria / pathological criteria/ imaging criteria) before discussing them in details.
*To view an example (endocarditis diagnostic criteria), click [[Endocarditis diagnosis|here]]
*If relevant, add additional information that might help the reader distinguish various criteria or the evolution of criteria (e.g. original criteria vs. modified criteria).
*You may also add information about the sensitivity and specificity of the criteria, the pre-test probability, and other figures that may help the reader understand how valuable the criteria are clinically.
* [Disease name] is mainly diagnosed based on clinical presentation. There are no established criteria for the diagnosis of [disease name].
* There is no single diagnostic study of choice for [disease name], though [disease name] may be diagnosed based on [name of criteria] established by [...].


* The diagnosis of [disease name] is made when at least [number] of the following [number] diagnostic criteria are met: [criterion 1], [criterion 2], [criterion 3], and [criterion 4].
* The diagnosis of [disease name] is based on the [criteria name] criteria, which includes [criterion 1], [criterion 2], and [criterion 3].


* [Disease name] may be diagnosed at any time if one or more of the following criteria are met:
** Criteria 1
** Criteria 2
** Criteria 3


IF there are clear, established diagnostic criteria:
*The diagnosis of [disease name] is made when at least [number] of the following [number] diagnostic criteria are met: [criterion 1], [criterion 2], [criterion 3], and [criterion 4].
*The diagnosis of [disease name] is based on the [criteria name] criteria, which include [criterion 1], [criterion 2], and [criterion 3].
*The diagnosis of [disease name] is based on the [definition name] definition, which includes [criterion 1], [criterion 2], and [criterion 3].
IF there are no established diagnostic criteria: 
*There are no established criteria for the diagnosis of [disease name].


==References==
==References==

Revision as of 15:06, 28 December 2017


Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Associate Editor(s)-in-Chief: Hadeel Maksoud M.D.[2]

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Overview

Abdominal CT is the diagnostic study of choice for suspected volvulus. Findings with CT include a whirl pattern denoting a dilated colon segment and a bird beak appearance of the afferent and efferent segment of colonic segments.

Diagnostic Study of Choice

Gold standard/Study of choice:

  • Abdominal CT is the gold standard test for the diagnosis of volvulus.[1][2]
  • The following result of abdominal CT is confirmatory of volvulus:
    • Whirl pattern signifying a dilated colon
    • Bird beak appearance of afferent and efferent colonic segments
  • The abdominal CT should be performed when:
    • The patient presented with symptoms of abdominal pain, distension, constipation/obstipation and nausea.

Diagnostic study of choice for volvulus

Sensitivity Specificity
Test 1 ✔ ...%
Test 2 ...% ✔

✔= The best test based on the feature

Sequence of Diagnostic Studies

The abdominal CT should be performed when:

  • The patient presented with symptoms of abdominal pain, abdominal distension, nausea and constipation.
  • This is also done to rule out other causes of intestinal obstruction and abdominal pain.

Diagnostic Criteria

  • Volvulus is mainly diagnosed based on clinical presentation.
  • There are no established criteria for the diagnosis of volvulus.



References

  1. ↑ Catalano O (1996). "Computed tomographic appearance of sigmoid volvulus". Abdom Imaging. 21 (4): 314–7. PMID 8661573.
  2. ↑ Levsky JM, Den EI, DuBrow RA, Wolf EL, Rozenblit AM (2010). "CT findings of sigmoid volvulus". AJR Am J Roentgenol. 194 (1): 136–43. doi:10.2214/AJR.09.2580. PMID 20028915.

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