Traumatic mucus cyst K13.4

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 23.04.2021

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Synonym(s)

Extravasation mucocele; Granuloma of the oral mucosa; Mucocele; mucoid cyst; Mucosal salivary granuloma; Mucous cyst of oral mucosa; Mucous membrane granuloma; Mucus cyst traumatic; Mucus retention cyst traumatic; oral mucocele; Traumatic cyst of the mucous gland; Traumatic mucus retention cyst

Definition
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After rupture of a salivary gland duct, usually solitary, only in exceptional cases multiple, glassy, soft, mostly painless pseudocyst with subsequent formation of a foreign body granuloma.

Etiopathogenesis
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Mostly injury to a salivary gland in case of bite wounds or other trauma of the oral mucosa. This results in the formation of an extravasation mucocele with a pseudocystic granulomatous reaction to the mucous extravasation (extravasation type).

Mucus retentions due to obstruction of the glandular exit duct (retention type) are rarer.

Manifestation
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In clinical studies the age of manifestation is given as between 15-40 years. There are no gender differences.

Localization
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Mainly lip mucosa (mostly lower lip about 35%), also cheek mucosa or ventral edge of the tongue (about 25%) are affected.

Clinical features
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Quite predominantly suddenly appearing, single-tooth, rarely multiple-tooth, reddish-bluish, glassy, soft, hemispherical, about 0.5-1.5 cm large, protuberant, glassy bright, but also bluish appearing, mostly painless nodule, which is covered by a normal mucosa.

Histology
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Cyst (pseudocyst) filled with mucoid substance, surrounded by a connective tissue pseudocapsule with peripheral formation of a foreign body granuloma with mucin-storing PAS-positive macrophages. Superficial subepithelial extravasation may lead to the imitation of a blistering disease.

Therapy
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Excision if necessary.

Progression/forecast
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Mucus granulomas generally regress after a few weeks. Exceptionally, they can also transform into permanent, firm, mostly pedunculated nodules (papillomas - see papilloma below), which can be disturbing during chewing.

Note(s)
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Mucous cysts of the floor of the mouth are called ranula. This is a retention mucocele of the sublingual gland.

Literature
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  1. Arendorf TM, van Wyk CW The association between perioral injury and mucoceles. Int J Oral surgery 10: 328-332
  2. Baurmash HD (2003) Mucoceles and ranulas. J Oral Maxillofac Surgery 61: 369-378
  3. Garcia-F-Villalta MJ (2002) Superficial mucoceles and lichenoid graft versus host disease: report of three cases. Acta Derm Venereol 82: 453-455
  4. Israel M (1996) Use of the CO2 laser in soft tissue and periodontal surgery. Pract Periodontics Aesthet Dent 6: 57-64
  5. Kolomvos N et al (2014) Surgical treatment of oral and facial soft tissue cystic lesions in children.
    Aretrospective analysis of 60 consecutive cases with literature review. J Craniomaxillofac Surgery 42:392-396
  6. Lattanand A et al (1970) Mucous cyst (mucocele). A clinicopathologic and histochemical study. Arch Dermatol 101: 673-678
  7. More CB et al (2015) Oral mucocele: A clinical andhistopathological study. J Oral Maxillofac Pathol 18 (Suppl 1): 72-77
  8. Porter SR et al (1998) Multiple salivary mucoceles in a young boy. Int J Paediatr Dent 8: 149-151

Disclaimer

Please ask your physician for a reliable diagnosis. This website is only meant as a reference.

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Last updated on: 23.04.2021