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  • Writer's pictureNalaka de Silva


Updated: Mar 31

Please note that the following is a general guideline only.


50 - 60 years

male = female

parotid gland most common

associated with medically debilitated and postoperative patients



-DM, hypothyroidism, renal failure, and


reduced salivary flow-Medications/ Sjögren's syndrome

mechanical impairment - stenosis / sialolithiasis → more common in SMG ducts


most commonly -penicillin-resistant Staphylococcus aureus,

Streptococcus species,S pyogenes, S viridans, and S pneumoniae

Hemophilus influenzae

Anaerobic and gram-negative bacteria in acute suppurative sialadenitis


stasis of salivary flow secondary to dehydration

→ retrograde bacterial contamination of the salivary ducts from the oral cavity

→ suppurative infection of the gland parenchyma

Why parotid> SMG

parotid gland produces saliva that is mainly serous, as opposed to saliva from the SMG and SLGs that is primarily mucoid

serous saliva, unlike mucinous saliva, is deficient in lysosomes, IgA antibodies, and sialic acid, which have antimicrobial properties

Saliva of SMG and SLGs contains high molecular weight glycoproteins that competitively inhibit bacterial attachment to the epithelial cells of the salivary ducts


systemic- fever, chills, and malaise

rapid onset of pain and swelling over the affected salivary gland

tenderness to palpation, with warmth and induration of the overlying skin

suppurative discharge from the duct orifice

multiple glands-bilateral involvement of up to 25% of cases

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