Learning objectives
To review the anatomy of the salivary glands,
oral cavity,
adjacent structures,
and possible routes for disease infiltration.
To describe the spectrum of inflammatory,
congenital,
benign and malignant conditions involving the salivary glands and oral cavity.
To illustrate the imaging features with examples of each condition with pathological correlation where appropriate.
Self assessment quiz.
Background
There are three major salivary glands,
the parotid,
submandibular and sublingual glands.
Minor salivary glands are diffusely located throughout the aerodigestive tract.
Infectious,
inflammatory,
congenital,
benign and malignant conditions can involve the salivary glands.
Detailed knowledge of the relevant anatomy is essential,
and helps to provide a confident approach to image interpretation.
We propose a guideline for the radiologist in evaluating various lesions based on characteristic imaging features and anatomical relationships.
The parotid space contains the parotid gland which is located superficially and extends over...
Imaging findings OR Procedure details
Benign conditions involving the salivary glands can be divided into:
Sialolithiasis
Non-Infectious Inflammation
Infectious Inflammation
Cystic Lesions
Benign Tumours
1.Sialolithiasis
Sialolithiasis is the second most common disease of the salivary glands after mumps.
It typically presents with painful swelling of the gland.
The submandibular gland is most commonly affected accounting for 85% of all salivary gland calculi due to the high mucus content of its secretions.
Non contrast CT has the highest sensitivity for calculus detection.
Infectious Inflammation
Paramyxo andcytomegalovirus are the most common viral...
Conclusion
Self Assessment Quiz
1.Simple ranulas occur in which space
a)parotid space
b)sublingual space
c)parapharyngeal space
d)submandibular space
2.Which gland has the highest rate of malignancy
a)parotid gland
b)submandibular gland
c)minor salivary glands
d)sublingual gland
3.
Which malignant tumour has the highest propensity for perineural spread
a)mucoepidermoid carcinoma
b)adenocarcinoma
c)squamous cell carcinoma
d)adenoid cystic carcinoma
4.
Which is the most common benign neoplasm of the parotid gland
a)pleomorphic adenoma
b)warthins tumour
c)mucoepidermoid carcinoma
d)adenocarcinoma
Conclusion
Following this review the Radiologist should be comfortable with the cross...
References
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US of the Major Salivary Glands: Anatomy and Spatial Relationships,
Pathologic Conditions,
and Pitfalls.
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2.La'Porte,
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Juttla,
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R.
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(2011).
Imaging the Floor of the Mouth and the Sublingual Space.
Radiographics,
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doi:10.1148/rg.315105062
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Youssem,
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Kraut,
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Radiology 2000.
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Zimmerman,
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5.Kurabayashi T,
Nakamura S,
Ogura I,
Sasaki T.
The sublingual...