Pleomorphic adenoma diagnostic study of choice: Difference between revisions

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__NOTOC__
__NOTOC__
{{Pleomorphic adenoma}}
{{Pleomorphic adenoma}}
{{CMG}}; {{AE}}
{{CMG}}; {{AE}} {{M.N}}
== Overview ==
== Overview ==
[[MRI scan|MRI]] is the study of choice for pleomorphic adenoma. On T1-weighted images they show [[homogeneous]] intensity, on T2 they show marked hyperintensity reflecting myxochondroid [[stroma]] and hypointensity corresponds to [[fibrous]] [[capsule]] of the [[tumor]]. On Gd-T1 [[imaging]] it shows [[heterogeneous]] enhancement.


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


=== Study of choice ===
=== Study of choice ===
[Name of the investigation] is the gold standard test for the diagnosis of [disease name].
*[[MRI]] is the preferred [[diagnostic]] study of choice for pleomorphic adenoma.<ref name="RaiRohit2013">{{cite journal|last1=Rai|first1=Shalu|last2=Rohit|first2=Malik|last3=Kaur|first3=Mandeep|last4=Mukul|first4=Prabhat|title=Pleomorphic adenoma: Choice of radiographic imaging modality - Computed tomography or magnetic resonance imaging? Illustration through a case report|journal=Dental Hypotheses|volume=4|issue=1|year=2013|pages=33|issn=2155-8213|doi=10.4103/2155-8213.110181}}</ref>
 
OR
 
The following result of [gold standard test] is confirmatory of [disease name]:
* [Result 1]
* [Result 2]
 
OR
 
[Name of the investigation] must be performed when:
* The patient presents with [symptom/sign 1], [symptom/sign 2], and [symptom/sign 3].
* A [name of test] is positive for [sign 1], [sign 2], and [sign 3] in the patient.
 
OR
 
[Name of the investigation] is the gold standard test for the diagnosis of [disease name].
 
OR
 
The diagnostic study of choice for [disease name] is [name of the investigation].
 
OR
 
There is no single diagnostic study of choice for the diagnosis of [disease name].  
 
OR
 
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].
 
OR
 
[Disease name] is primarily diagnosed based on the clinical presentation.
 
OR
 
Investigations:
* Among the patients who present with clinical signs of [disease name], the [investigation name] is the most specific test for the diagnosis.
* Among the patients who present with clinical signs of [disease name], the [investigation name] is the most sensitive test for diagnosis.
* Among the patients who present with clinical signs of [disease name], the [investigation name] is the most efficient test for diagnosis.


==== The comparison of various diagnostic studies for [disease name] ====
==== The comparison of various diagnostic studies for [disease name] ====
Line 55: Line 17:
! style="background: #4479BA; color: #FFFFFF; text-align: center;" |Specificity
! style="background: #4479BA; color: #FFFFFF; text-align: center;" |Specificity
|-
|-
! style="background: #696969; color: #FFFFFF; text-align: center;" |Test 1
! style="background: #696969; color: #FFFFFF; text-align: center;" |MRI
| style="background: #DCDCDC; padding: 5px; text-align: center;" |...%
| style="background: #DCDCDC; padding: 5px; text-align: center;" |43.9%
| style="background: #DCDCDC; padding: 5px; text-align: center;" |...%
| style="background: #DCDCDC; padding: 5px; text-align: center;" |95%
|-
! style="background: #696969; color: #FFFFFF; text-align: center;" |Test 2
| style="background: #DCDCDC; padding: 5px; text-align: center;" |...%
| style="background: #DCDCDC; padding: 5px; text-align: center;" |...%
|}
|}
<small> [Name of test with higher sensitivity and specificity] is the preferred investigation based on the sensitivity and specificity</small>
<small> [Name of test with higher sensitivity and specificity] is the preferred investigation based on the sensitivity and specificity</small>


===== Diagnostic results =====
===== Diagnostic results =====
The following finding(s) on performing [investigation name] is(are) confirmatory for [disease name]:
======MRI======
* [Finding 1]
*[[MRI scan|MRI]] is the [[imaging]] modality of choice for pleomorphic adenoma.<ref name="pmid8881252">{{cite journal |vauthors=Ikeda K, Katoh T, Ha-Kawa SK, Iwai H, Yamashita T, Tanaka Y |title=The usefulness of MR in establishing the diagnosis of parotid pleomorphic adenoma |journal=AJNR Am J Neuroradiol |volume=17 |issue=3 |pages=555–9 |date=March 1996 |pmid=8881252 |doi= |url=}}</ref><ref name="RaiRohit2013">{{cite journal|last1=Rai|first1=Shalu|last2=Rohit|first2=Malik|last3=Kaur|first3=Mandeep|last4=Mukul|first4=Prabhat|title=Pleomorphic adenoma: Choice of radiographic imaging modality - Computed tomography or magnetic resonance imaging? Illustration through a case report|journal=Dental Hypotheses|volume=4|issue=1|year=2013|pages=33|issn=2155-8213|doi=10.4103/2155-8213.110181}}</ref>
* [Finding 2]
*On T1-weighted images:
** Pleomorphic adenoma's show [[homogeneous]] intensity. <ref name="HisatomiAsaumi2003">{{cite journal|last1=Hisatomi|first1=Miki|last2=Asaumi|first2=Jun-ichi|last3=Yanagi|first3=Yoshinobu|last4=Konouchi|first4=Hironobu|last5=Matsuzaki|first5=Hidenobu|last6=Honda|first6=Yasutoshi|last7=Kishi|first7=Kanji|title=Assessment of pleomorphic adenomas using MRI and dynamic contrast enhanced MRI|journal=Oral Oncology|volume=39|issue=6|year=2003|pages=574–579|issn=13688375|doi=10.1016/S1368-8375(03)00040-X}}</ref>
*On T2-weighted images:
**Marked hyperintensity reflects abundant myxochondroid [[stroma]].<ref name="pmid29845358">{{cite journal |vauthors=Kato H, Kawaguchi M, Ando T, Mizuta K, Aoki M, Matsuo M |title=Pleomorphic adenoma of salivary glands: common and uncommon CT and MR imaging features |journal=Jpn J Radiol |volume=36 |issue=8 |pages=463–471 |date=August 2018 |pmid=29845358 |doi=10.1007/s11604-018-0747-y |url=}}</ref>
**Hypointensity reflects the [[fibrous]] [[capsule]] of the [[tumor]].<ref name="pmid29845358">{{cite journal |vauthors=Kato H, Kawaguchi M, Ando T, Mizuta K, Aoki M, Matsuo M |title=Pleomorphic adenoma of salivary glands: common and uncommon CT and MR imaging features |journal=Jpn J Radiol |volume=36 |issue=8 |pages=463–471 |date=August 2018 |pmid=29845358 |doi=10.1007/s11604-018-0747-y |url=}}</ref>
*On Gd-T1weighted images:
**It shows [[heterogeneous]] enhancement.<ref name="HisatomiAsaumi2003">{{cite journal|last1=Hisatomi|first1=Miki|last2=Asaumi|first2=Jun-ichi|last3=Yanagi|first3=Yoshinobu|last4=Konouchi|first4=Hironobu|last5=Matsuzaki|first5=Hidenobu|last6=Honda|first6=Yasutoshi|last7=Kishi|first7=Kanji|title=Assessment of pleomorphic adenomas using MRI and dynamic contrast enhanced MRI|journal=Oral Oncology|volume=39|issue=6|year=2003|pages=574–579|issn=13688375|doi=10.1016/S1368-8375(03)00040-X}}</ref>


===== Sequence of Diagnostic Studies =====
===== Sequence of Diagnostic Studies =====
The [name of investigation] must 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.
OR
The various investigations must be performed in the following order:
The various investigations must be performed in the following order:
* [Initial investigation]
*[[CT]] is usually the first [[imaging]] modality of choice for pleomorphic adenoma.<ref name="RaiRohit2013">{{cite journal|last1=Rai|first1=Shalu|last2=Rohit|first2=Malik|last3=Kaur|first3=Mandeep|last4=Mukul|first4=Prabhat|title=Pleomorphic adenoma: Choice of radiographic imaging modality - Computed tomography or magnetic resonance imaging? Illustration through a case report|journal=Dental Hypotheses|volume=4|issue=1|year=2013|pages=33|issn=2155-8213|doi=10.4103/2155-8213.110181}}</ref>
* [2nd investigation]
*It helps in identifying the [[lesion]] and also helps the [[physician]] in assessing the [[extension]] of the [[tumor]].
*[[MRI]] is the usually ordered investigation next after [[CT]], for an even more detailed study.<ref name="RaiRohit2013">{{cite journal|last1=Rai|first1=Shalu|last2=Rohit|first2=Malik|last3=Kaur|first3=Mandeep|last4=Mukul|first4=Prabhat|title=Pleomorphic adenoma: Choice of radiographic imaging modality - Computed tomography or magnetic resonance imaging? Illustration through a case report|journal=Dental Hypotheses|volume=4|issue=1|year=2013|pages=33|issn=2155-8213|doi=10.4103/2155-8213.110181}}</ref>
*It is a [[Non-ionizing radiation|non-ionizing]] modality with excellent [[soft tissue]] distinction.
*[[FNA]] and [[biopsy]] is the definitive method of [[diagnosis]] for pleomorphic adenoma.


=== Name of Diagnostic Criteria ===
=== Name of Diagnostic Criteria ===
 
There are no established [[criteria]] for the [[diagnosis]] of pleomorphic adenoma.
'''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.'''
 
[Disease name] is primarily diagnosed based on clinical presentation. There are no established criteria for the diagnosis of [disease name].
 
OR
 
There is no single diagnostic study of choice for [disease name], though [disease name] may be diagnosed based on [name of criteria] established by [...].
 
OR
 
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].
 
OR
 
The diagnosis of [disease name] is based on the [criteria name] criteria, which includes [criterion 1], [criterion 2], and [criterion 3].
 
OR
 
[Disease name] may be diagnosed at any time if one or more of the following criteria are met:
* Criteria 1
* Criteria 2
* Criteria 3
 
OR
 
'''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].
 
OR
 
The diagnosis of [disease name] is based on the [criteria name] criteria, which include [criterion 1], [criterion 2], and [criterion 3].
 
OR
 
The diagnosis of [disease name] is based on the [definition name] definition, which includes [criterion 1], [criterion 2], and [criterion 3].
 
OR
 
'''IF there are no established diagnostic criteria'''
 
There are no established criteria for the diagnosis of [disease name].


==References==
==References==
{{Reflist|2}}
{{Reflist|2}}
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{{WS}}
[[Category: Otolaryngology]]
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Latest revision as of 18:48, 28 January 2019

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

Overview

MRI is the study of choice for pleomorphic adenoma. On T1-weighted images they show homogeneous intensity, on T2 they show marked hyperintensity reflecting myxochondroid stroma and hypointensity corresponds to fibrous capsule of the tumor. On Gd-T1 imaging it shows heterogeneous enhancement.

Diagnostic Study of Choice

Study of choice

The comparison of various diagnostic studies for [disease name]

Test Sensitivity Specificity
MRI 43.9% 95%

[Name of test with higher sensitivity and specificity] is the preferred investigation based on the sensitivity and specificity

Diagnostic results
MRI
Sequence of Diagnostic Studies

The various investigations must be performed in the following order:

Name of Diagnostic Criteria

There are no established criteria for the diagnosis of pleomorphic adenoma.

References

  1. 1.0 1.1 1.2 1.3 Rai, Shalu; Rohit, Malik; Kaur, Mandeep; Mukul, Prabhat (2013). "Pleomorphic adenoma: Choice of radiographic imaging modality - Computed tomography or magnetic resonance imaging? Illustration through a case report". Dental Hypotheses. 4 (1): 33. doi:10.4103/2155-8213.110181. ISSN 2155-8213.
  2. Ikeda K, Katoh T, Ha-Kawa SK, Iwai H, Yamashita T, Tanaka Y (March 1996). "The usefulness of MR in establishing the diagnosis of parotid pleomorphic adenoma". AJNR Am J Neuroradiol. 17 (3): 555–9. PMID 8881252.
  3. 3.0 3.1 Hisatomi, Miki; Asaumi, Jun-ichi; Yanagi, Yoshinobu; Konouchi, Hironobu; Matsuzaki, Hidenobu; Honda, Yasutoshi; Kishi, Kanji (2003). "Assessment of pleomorphic adenomas using MRI and dynamic contrast enhanced MRI". Oral Oncology. 39 (6): 574–579. doi:10.1016/S1368-8375(03)00040-X. ISSN 1368-8375.
  4. 4.0 4.1 Kato H, Kawaguchi M, Ando T, Mizuta K, Aoki M, Matsuo M (August 2018). "Pleomorphic adenoma of salivary glands: common and uncommon CT and MR imaging features". Jpn J Radiol. 36 (8): 463–471. doi:10.1007/s11604-018-0747-y. PMID 29845358.

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