Ectopic salivary gland tissue

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Ectopic salivary gland tissue which is located in sites other than the normal location is variously described as aberrant, accessory, ectopic, heterotopic or salivary gland choristoma.^[1]^[2]

Accessory salivary glands

An accessory salivary gland is ectopic salivary gland tissue with a salivary gland duct system.^[3] The most common location of accessory salivary gland tissue is an extra major salivary gland in front of the parotid gland. It is typically about 3 cm or less in size, and drains into the parotid duct via a single tributary.^[3] Accessory parotid tissue is found in 21-56% of adults.^[3] Any disease process which affects the salivary glands, including cancer, may also occur within an accessory salivary gland tissue.

Heterotopic salivary gland tissue

Salivary gland heterotopia is where salivary gland acini cells are present in an abnormal location without any duct system.^[3] The most common location is the cervical lymph nodes. Other reported sites of heterotopic salivary gland tissue are the middle ear, parathyroid glands, thyroid gland, pituitary gland, cerebellopontine angle, soft tissue medial to sternocleidomastoid, stomach, rectum and vulva.^[3] Salivary gland neoplasm occurrence within heterotopic salivary gland tissue is rare.^[3]

References

^ Barnes L (2008). Surgical pathology of the head and neck (3rd ed.). New York: Informa Healthcare. pp. 477–478. ISBN 9780849390234.
^ Ghom AG; Ghom SA (1 July 2014). Textbook of Oral Medicine. JP Medical Ltd. p. 605. ISBN 978-93-5152-303-1.
^ ^a ^b ^c ^d ^e ^f Witt RL (1 January 2011). Salivary Gland Diseases: Surgical and Medical Management. Thieme. pp. 50–51. ISBN 978-1-60406-537-4.

Oral and maxillofacial pathology

Lips
Cheilitis Actinic Angular Plasma cell Cleft lip Congenital lip pit Eclabium Herpes labialis Macrocheilia Microcheilia Nasolabial cyst Sun poisoning Trumpeter's wart

Tongue
Ankyloglossia Black hairy tongue Caviar tongue Crenated tongue Cunnilingus tongue Fissured tongue Foliate papillitis Glossitis Geographic tongue Median rhomboid glossitis Transient lingual papillitis Glossoptosis Hypoglossia Lingual thyroid Macroglossia Microglossia Rhabdomyoma

Palate
Bednar's aphthae Cleft palate High-arched palate Palatal cysts of the newborn Inflammatory papillary hyperplasia Stomatitis nicotina Torus palatinus

Oral mucosa – Lining of mouth

Teeth (pulp, dentin, enamel)

Periodontium (gingiva, periodontal ligament, cementum, alveolus) – Gums and tooth-supporting structures

Periapical, mandibular and maxillary hard tissues – Bones of jaws

Temporomandibular joints, muscles of mastication and malocclusions – Jaw joints, chewing muscles and bite abnormalities
Bruxism Condylar resorption Mandibular dislocation Malocclusion Crossbite Open bite Overbite Overeruption Overjet Prognathia Retrognathia Scissor bite Maxillary hypoplasia Temporomandibular joint dysfunction Condylar hypoplasia Condylar hyperplasia

Salivary glands

Stomatognathic system – Teeth, jaws, tongue and associated soft tissues
Bruxism Mouth breathing Sleep apnea Catathrenia Central hypoventilation syndrome Obesity hypoventilation syndrome Obstructive sleep apnea Periodic breathing Snoring

Orofacial soft tissues – Soft tissues around the mouth
Actinomycosis Angioedema Basal cell carcinoma Cutaneous sinus of dental origin Cystic hygroma Gnathophyma Ludwig's angina Macrostomia Melkersson–Rosenthal syndrome Microstomia Noma Oral Crohn's disease Orofacial granulomatosis Perioral dermatitis Pyostomatitis vegetans

Other
Eagle syndrome Hemifacial hypertrophy Facial hemiatrophy Oral manifestations of systemic disease

Category:

Salivary gland pathology

Accessory salivary glands

Heterotopic salivary gland tissue

See also

References