Adenoid cystic carcinoma of the salivary glands
Updates to Article Attributes
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Adenoid cystic carcinoma (ACC) of the salivary glands is the second most common malignancy involving the parotid and the most common involving secondaryminor salivary glands.
Radiographic features
CT-scan
Generally, a distinction is made radiologically between low-grade and high-grade adenoid cystic carcinomas. Low-grade tend to be well-defined malignancies as opposed to high-grade ACCs who appear infiltrative. However, both subtypes are usually homogeneously enhancing after contrast administration.
ACCs are frequently associated with perineural spread (cranial nerve VII), which is more appreciated on MRI.
MRI
- T1: hypo- to isointense
- T2: slightly hyperintense, with higher grades being markedly hyperintense
- T1 C+: homogeneous enhancement
See also
-<p><strong>Adenoid cystic carcinoma (ACC)</strong> of the salivary glands is the second most common malignancy involving the parotid and the most common involving secondary salivary glands.</p><h4>Radiographic features</h4><h5>CT-scan</h5><p>Generally, a distinction is made radiologically between low-grade and high-grade adenoid cystic carcinomas. Low-grade tend to be well-defined malignancies as opposed to high-grade ACCs who appear infiltrative. However, both subtypes are usually homogeneously enhancing after contrast administration.</p><p>ACCs are frequently associated with perineural spread (<a href="/articles/cranial-nerve-vii">cranial nerve VII</a>), which is more appreciated on MRI.</p><h5>MRI</h5><ul>- +<p><strong>Adenoid cystic carcinoma (ACC)</strong> of the salivary glands is the second most common malignancy involving the parotid and the most common involving minor salivary glands.</p><h4>Radiographic features</h4><h5>CT-scan</h5><p>Generally, a distinction is made radiologically between low-grade and high-grade adenoid cystic carcinomas. Low-grade tend to be well-defined malignancies as opposed to high-grade ACCs who appear infiltrative. However, both subtypes are usually homogeneously enhancing after contrast administration.</p><p>ACCs are frequently associated with perineural spread (<a href="/articles/cranial-nerve-vii">cranial nerve VII</a>), which is more appreciated on MRI.</p><h5>MRI</h5><ul>
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