II. Epidemiology

  1. Most common in children and young adults

III. Causes

  1. Local Trauma (e.g. biting lip)

IV. Pathophysiology

  1. Results from Traumatic rupture of Salivary Glands
  2. Results in mucin spillage into lower lip

V. Signs

  1. Benign lesion 1-2 cm diameter
  2. Round, regular, translucent or bluish Nodule
  3. Distribution
    1. Typically occurs on inside of lower lip
    2. May occur in any oral surface with Salivary Glands
  4. Consistency
    1. Early lesions are fluctuant
    2. Later lesions are firm and fibrotic

VI. Differential Diagnosis

  1. Lip Neoplasm
  2. Lip Aneurysm
  3. Dermoid Cyst

VII. Management

  1. Small Mucoceles resolve spontaneously without treatment
  2. Local treatment techniques
    1. Indicated in lesions that are typical for Mucocele
    2. Anesthesia with Local Lidocaine with Epinephrine at the base of the lesion
    3. Technique 1
      1. Shave the lesion with scalpel, removing the top 50-75% but leaving the base
      2. Obtain Hemostasis
    4. Technique 2
      1. Place 4-0 or 5-0 Nylon Suture through the Mucocele, creating 2 holes in its surface
      2. Tie the Suture and remove in 5-7 days
    5. Other techniques
      1. Cryotherapy
      2. Electrocautery
  3. Surgical excision
    1. Indicated for suspicious lesions (refer to otolaryngology, oral facial surgery or dermatology)
    2. Also excise minor Salivary Glands at Mucocele base
    3. Send for pathology to rule-out neoplasia

VIII. References

  1. Warrington (2020) Crit Dec Emerg Med 34(1): 13
  2. Randall (2022) Am Fam Physician 105(4): 369-76 [PubMed]

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Related Studies

Ontology: Mucocele (C0026683)

Definition (MSHCZE) Nahromadění hlenu v určitém prostoru, např. v dutém orgánu. (cit. Velký lékařský slovník online, 2012 http://lekarske.slovniky.cz/ )
Definition (NCI) A mucous containing cyst arising from the minor salivary glands in the oral cavity.
Definition (MSH) A retention cyst of the salivary gland, lacrimal sac, paranasal sinuses, appendix, or gallbladder. (Stedman, 26th ed)
Concepts Anatomical Abnormality (T190)
MSH D009078
SnomedCT 19633006
English Mucocele, Mucoceles, Mucous Cyst, Mucocele [Disease/Finding], mucocele, mucous retention cyst, mucus cyst, mucous cyst, mucinous cyst, mucoceles, Mucocoele, Mucus cyst, Mucinous cyst, Mucous cyst, Mucous retention cyst, Mucous cyst (morphologic abnormality)
Swedish Slemcysta
Finnish Mukoseele
Polish Torbiel zastoinowa gruczołów śluzowych, Torbiel śluzowa, Śluzowiak
Czech mukokéla, mukokély, mukokela
Norwegian Slimcyste, Mukocele
Spanish mucocele, quiste de retención mucoso, quiste mucinoso, quiste mucoso (anomalía morfológica), quiste mucoso, Mucocele
French Mucocèle
German Mukozele
Italian Mucocele
Dutch Mucocele, Mucokèle
Portuguese Mucocele