45 Salivary conditions: Mucoceles, sialosis

45 Salivary conditions: Mucoceles, sialosis

Figure 45.1 Mucocele.

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Figure 45.2 Mucocele.

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Figure 45.3 Mucocele.

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Figure 45.4 Mucocele (ranula).

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Figure 45.5 Retention cyst of minor salivary gland.

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Figure 45.6 Sialosis: causes.

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Figure 45.7 Sialosis.

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Figure 45.8 MRI in sialosis.

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Figure 45.9 Histopathology in sialosis showing acinar hypertrophy.

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Mucoceles (mucous cyst; mucus extravasation phenomenon; myxoid cyst)

Definition: A mucus-filled cyst.

Prevalence (approximate): Common.

Age mainly affected: Young adults/children.

Gender mainly affected: M > F.

Etiopathogenesis; Most mucus-filled cysts are mucoceles (90–95%) – extravasation mucoceles due to ductal damage; most are seen in the lower labial mucosa or on the lower lip, presumably resulting from trauma from lip-biting, resulting from the escape of mucus from a damaged minor salivary gland duct into the lamina propria.

Occasionally, mucus-filled cysts are mucus retention cysts – mucus is retained within a salivary gland or duct; most are seen in the upper lip or sublingually (ranula).

Rarely, mucus extravasates intra- or subepithelially – superficial mucoceles, seen mainly in lichen planus; palatal lesions are most common.

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Jan 12, 2015 | Posted by in Oral and Maxillofacial Pathology | Comments Off on 45 Salivary conditions: Mucoceles, sialosis
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