Salivary gland tumors
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InSalivary gland tumours can be very variable. In general, the ratio of benign to malignant tumours is proportional to the gland size; ie: the parotid gland tends to have benign neoplams, the submandibular gland50:50 and the sublingual glands and accessory glands mostly malignant. Due to the size discrepancy in absolute numbers parotid gland has the most tumours.
Frequency
- parotid gland - 70%
- minor salivary glands (including sublingual) - 22% (palate being most frequent)- see minor salivary gland tumours
- submandibular gland - 8%
Overall approximately 80% of all parotid masses are benign, and the majority of these are pleomorphic adenomas
Benign epithelial
- pleomorphic adenoma - this is the most common (≈ 50%) tumour of the parotid
- Warthin tumour - essentially only found in the parotid, in older, usually male, patients; it is bilateral in 10-15%
- intraductal papiloma of salivary glands
- oncocytoma of salivary glands
- myoepithelioma : until recently considered a sub type of pleomorphic adenoma ; they can also originate in breast and bronchus
Benign non-epithelial
Malignant
- mucoepidermoid carcinoma (commonest of the malignant lesions)
- adenoid cystic carcinoma
- myoepithelioma
- adenocarcinoma (not otherwise specified)
- acinic cell carcinoma of salivary glands
- squamous cell carcinoma of salivary glands
-
malignant mixed tumours of the salivary glands
- carcinoma ex pleomorphicadenoma
- carcinosarcoma (truemixed tumour of the salivary glands)
- metastasising pleomorphicadenoma
See also
-<p>In general, the ratio of benign to malignant tumours is proportional to the gland size; ie: the <a href="/articles/parotid-gland">parotid gland</a> tends to have benign neoplams, the <a href="/articles/submandibular-gland">submandibular gland</a> 50:50 and the <a href="/articles/sublingual-gland">sublingual glands</a> and accessory glands mostly malignant. Due to the size discrepancy in absolute numbers parotid gland has the most tumours.-</p><h5>Frequency</h5><ul>-<li>parotid gland - 70%-</li>-<li>minor salivary glands (including sublingual) - 22% (palate being most frequent)-- see <a title="Minor salivary gland tumours" href="/articles/minor-salivary-gland-tumours">minor salivary gland tumours</a>-</li>-<li>submandibular gland - 8%-</li>-</ul><p>Overall approximately 80% of all parotid masses are benign, and the majority of these are pleomorphic adenomas-</p><a name="Benign_epithelial"></a><h4> <span>Benign epithelial</span>-</h4><ul>-<li>-<a href="/articles/pleomorphic_adenoma">pleomorphic adenoma</a> - this is the most common (≈ 50%) tumour of the parotid</li>-<li>-<a href="/articles/warthin_tumour">Warthin tumour</a> - essentially only found in the parotid, in older, usually male, patients; it is bilateral in 10-15%</li>-<li><a href="/articles/intraductal-papiloma-of-salivary-gland">intraductal papiloma of salivary glands</a></li>-<li><a href="/articles/oncocytoma-of-salivary-gland">oncocytoma of salivary glands</a></li>-<li>-<a href="/articles/myoepithelioma">myoepithelioma</a> : until recently considered a sub type of pleomorphic adenoma ; they can also originate in breast and bronchus</li>-</ul><a name="Benign_non-epithelial"></a><h4> <span>Benign non-epithelial</span>-</h4><ul>-<li><a href="/articles/haemangioma">haemangioma</a></li>-<li><a href="/articles/lymphangioma">lymphangioma</a></li>-<li><a href="/articles/lipoma">lipoma</a></li>-</ul><a name="Malignant"></a><h4> <span>Malignant</span>-</h4><ul>-<li>-<a href="/articles/mucoepidermoid-carcinoma-of-salivary-glands">mucoepidermoid carcinoma </a>(commonest of the malignant lesions)</li>-<li><a href="/articles/adenoid-cystic-carcinoma">adenoid cystic carcinoma</a></li>-<li>-<a href="/articles/myoepithelioma">myoepithelioma</a>-</li>-<li><a title="adenocarcinoma (not otherwise specified)" href="/articles/adenocarcinoma-not-otherwise-specified">adenocarcinoma (not otherwise specified)</a></li>-<li><a title="acinic cell carcinoma of salivary glands" href="/articles/acinic-cell-carcinoma-of-salivary-glands">acinic cell carcinoma of salivary glands</a></li>-<li><a title="squamous cell carcinoma of salivary glands" href="/articles/squamous-cell-carcinoma-of-salivary-glands">squamous cell carcinoma of salivary glands</a></li>-<li>-<a title="malignant mixed tumours of the salivary glands" href="/articles/malignant-mixed-tumours-of-the-salivary-glands">malignant mixed tumours of the salivary glands</a><ul>-<li><a title="carcinoma ex pleomorphic adenoma" href="/articles/carcinoma-ex-pleomorphic-adenoma">carcinoma ex pleomorphic-adenoma</a></li>-<li>-<a title="carcinosarcoma of salivary glands" href="/articles/carcinosarcoma-of-salivary-glands">carcinosarcoma</a> (true-mixed tumour of the salivary glands)</li>-<li><a title="metastasising pleomorphic adenoma" href="/articles/metastasising-pleomorphic-adenoma">metastasising pleomorphic-adenoma</a></li>- +<p><strong>Salivary gland tumours</strong> can be very variable. In general, the ratio of benign to malignant tumours is proportional to the gland size; ie: the <a href="/articles/parotid-gland">parotid gland</a> tends to have benign neoplams, the <a href="/articles/submandibular-gland">submandibular gland</a> 50:50 and the <a href="/articles/sublingual-gland">sublingual glands</a> and accessory glands mostly malignant. Due to the size discrepancy in absolute numbers parotid gland has the most tumours.</p><h5>Frequency</h5><ul>
- +<li>parotid gland - 70%</li>
- +<li>minor salivary glands (including sublingual) - 22% (palate being most frequent) - see <a href="/articles/minor-salivary-gland-tumours">minor salivary gland tumours</a>
- +</li>
- +<li>submandibular gland - 8%</li>
- +</ul><p>Overall approximately 80% of all parotid masses are benign, and the majority of these are pleomorphic adenomas</p><h4>Benign epithelial</h4><ul>
- +<li>
- +<a href="/articles/pleomorphic-adenoma-of-the-salivary-glands">pleomorphic adenoma</a> - this is the most common (≈ 50%) tumour of the parotid</li>
- +<li>
- +<a href="/articles/warthin-tumour">Warthin tumour</a> - essentially only found in the parotid, in older, usually male, patients; it is bilateral in 10-15%</li>
- +<li><a href="/articles/intraductal-papiloma-of-salivary-gland">intraductal papiloma of salivary glands</a></li>
- +<li><a title="Oncocytoma of salivary glands" href="/articles/oncocytoma-of-salivary-glands">oncocytoma of salivary glands</a></li>
- +<li>
- +<a href="/articles/myoepithelioma">myoepithelioma</a> : until recently considered a sub type of pleomorphic adenoma ; they can also originate in breast and bronchus</li>
- +</ul><h4>Benign non-epithelial</h4><ul>
- +<li><a href="/articles/haemangioma">haemangioma</a></li>
- +<li><a href="/articles/lymphangioma">lymphangioma</a></li>
- +<li><a href="/articles/lipoma">lipoma</a></li>
- +</ul><h4>Malignant</h4><ul>
- +<li>
- +<a href="/articles/mucoepidermoid-carcinoma-of-salivary-glands">mucoepidermoid carcinoma </a>(commonest of the malignant lesions)</li>
- +<li><a href="/articles/adenoid-cystic-carcinoma">adenoid cystic carcinoma</a></li>
- +<li><a href="/articles/myoepithelioma">myoepithelioma</a></li>
- +<li><a href="/articles/adenocarcinoma-not-otherwise-specified">adenocarcinoma (not otherwise specified)</a></li>
- +<li><a href="/articles/acinic-cell-carcinoma-of-salivary-glands">acinic cell carcinoma of salivary glands</a></li>
- +<li><a href="/articles/squamous-cell-carcinoma-of-salivary-glands">squamous cell carcinoma of salivary glands</a></li>
- +<li>
- +<a href="/articles/malignant-mixed-tumours-of-the-salivary-glands">malignant mixed tumours of the salivary glands</a><ul>
- +<li><a href="/articles/carcinoma-ex-pleomorphic-adenoma">carcinoma ex pleomorphic adenoma</a></li>
- +<li>
- +<a href="/articles/carcinosarcoma-of-salivary-glands">carcinosarcoma</a> (true mixed tumour of the salivary glands)</li>
- +<li><a href="/articles/metastasising-pleomorphic-adenoma">metastasising pleomorphic adenoma</a></li>
-</li>- +</li>
-<li><a title="Staging of malignant salivary gland tumours" href="/articles/staging-of-malignant-salivary-gland-tumours">staging of malignant salivary gland tumours</a></li>-<li><a title="Parotid enlargement" href="/articles/parotid-enlargement">parotid enlargement</a></li>- +<li><a href="/articles/staging-of-malignant-salivary-gland-tumours">staging of malignant salivary gland tumours</a></li>
- +<li><a href="/articles/parotid-enlargement">parotid enlargement</a></li>
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Case 1 -: adenocarcinoma of parotid gland
Image 1 Diagram ( update )
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Image 2 Diagram ( update )
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Image 4 CT (C+ delayed) ( update )
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Case 2 -: mucoepidermoid carcinoma
Image 5 MRI (T1 C+ fat sat) ( update )
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Case 3 -: pleomorphic adenoma
Image 6 Ultrasound ( update )
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Case 4 -: oncocytoma of submandibular gland
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