Pleomorphic adenoma MRI: Difference between revisions

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==MRI==
==MRI==
*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>
*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>
*MRI criteria for the diagnosis of pleomorphic adenoma include the following:
**Bright T2-signal
**Sharp margins
**Heterogeneous nodular enhancement
**Lobulated contours
**T2-dark rim
*On T1-weighted images:
*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>
** 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>

Revision as of 19:07, 17 January 2019

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

Overview

There are no MRI findings associated with [disease name].

OR

[Location] MRI may be helpful in the diagnosis of [disease name]. Findings on MRI suggestive of/diagnostic of [disease name] include [finding 1], [finding 2], and [finding 3].

OR

There are no MRI findings associated with [disease name]. However, a MRI may be helpful in the diagnosis of complications of [disease name], which include [complication 1], [complication 2], and [complication 3].

MRI

  • MRI is the imaging modality of choice for pleomorphic adenoma.[1]
  • MRI criteria for the diagnosis of pleomorphic adenoma include the following:
    • Bright T2-signal
    • Sharp margins
    • Heterogeneous nodular enhancement
    • Lobulated contours
    • T2-dark rim
  • On T1-weighted images:
    • Pleomorphic adenoma's show homogeneous intensity. [2]
  • On T2-weighted images:
    • Marked hyperintensity reflects abundant myxochondroid stroma.[3]
    • Hypointensity reflects the fibrous capsule of the tumor.[3]
  • On Gd-T1weighted images:
    • It shows heterogeneous enhancement.[2]
Pleomorphic adenoma of left parotid gland MRI,Case courtesy of Dr Alexandra Stanislavsky, Radiopaedia.org, rID: 14618Case courtesy of Dr Alexandra Stanislavsky, <a href="https://radiopaedia.org/">Radiopaedia.org</a>. From the case <a href="https://radiopaedia.org/cases/14618">rID: 14618</a>

References

  1. 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.
  2. 2.0 2.1 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.
  3. 3.0 3.1 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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