Pleomorphic adenoma diagnostic study of choice
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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
- MRI is the preferred diagnostic study of choice for pleomorphic adenoma.[1]
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
- MRI is the imaging modality of choice for pleomorphic adenoma.[2][1]
- On T1-weighted images:
- Pleomorphic adenoma's show homogeneous intensity. [3]
- On T2-weighted images:
- On Gd-T1weighted images:
- It shows heterogeneous enhancement.[3]
Sequence of Diagnostic Studies
The various investigations must be performed in the following order:
- CT is usually the first imaging modality of choice for pleomorphic adenoma.[1]
- 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.[1]
- It is a non-ionizing modality with excellent soft tissue distinction.
- FNA and biopsy is the definitive method of diagnosis for pleomorphic adenoma.
Name of Diagnostic Criteria
There are no established criteria for the diagnosis of pleomorphic adenoma.
References
- ↑ 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.
- ↑ 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.
- ↑ 3.0 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.
- ↑ 4.0 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.