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Saliva stagnates and forms a mucus plug behind the stricture during sleep when the salivary output of the parotid is reduced. Then, when salivary secretion is stimulated, the mucus plug becomes stuck in the stricture. [1] The backlog of saliva behind the blockage causes the swelling, and the increased pressure inside the gland causes the pain.
The cause and pathogenesis of this chronic condition are not very well understood. Several factors have been postulated: Formation of a hard salivary calculus or sialolith by accumulation of calcium salts in the duct of the salivary gland (a process known as Sialolithiasis). This has been proposed as the most common cause for Küttner's tumor ...
Blockage, whether caused by salivary duct stones or external compression, may cause pain and swelling of the parotid gland . Koplik's spots which are pathognomonic of measles are found near the opening of the parotid duct. The parotid duct may be cannulated by inserting a tube through the internal orifice in the mouth. [2]
A salivary diverticulum (plural diverticuli) is a small pouch or out-pocketing of the duct system of a major salivary gland. [16] Such diverticuli typically cause pooling of saliva and recurrent sialadenitis, [17] especially parotitis. [18] A diverticulum may also cause a sialolith to form. [19] [20] The condition can be diagnosed by ...
Sialolithiasis (also termed salivary calculi, [1] or salivary stones) [1] is a crystallopathy where a calcified mass or sialolith forms within a salivary gland, usually in the duct of the submandibular gland (also termed "Wharton's duct"). Less commonly the parotid gland or rarely the sublingual gland or a minor salivary gland may develop ...
It composes of acini and ductal elements embedded in dense sclerotic stroma, and has a characteristic finding of large acinar cells present with abundant eosinophilic cytoplasmic granules. In addition, it may also present ductal epithelial proliferation which could range from hyperplasia, atypia to DCIS-like. Its stroma may show focal adipose ...
Sialectasis (also termed sialectasia, or siadochiectasis) [1] is cystic dilation of the ducts of salivary glands. [2] It may be caused by salivary duct strictures or stones (sialolithiasis). [3] It can also rarely be congenital. [4]
Unstimulated whole saliva flow rate more closely correlates with symptoms of xerostomia than stimulated salivary flow rate. [1] Sialography involves introduction of radio-opaque dye such as iodine into the duct of a salivary gland. [1] It may show blockage of a duct due to a calculus. Salivary scintiscanning using technetium is rarely used.