Understanding Salivary Ranulas: Causes, Diagnosis, and Treatment

Salivary ranulas are mucous cysts that originate exclusively from the sublingual gland.

They form pseudocysts not lined by true epithelium but connective tissue filled with extravasated saliva.

The name 'ranula' is derived from the Latin term for 'little frog', relating to their appearance.

Ranulas can be classified as simple ranulas, which are above the mylohyoid muscle, or plunging ranulas, which extend deeper into the neck.

Plunging ranulas penetrate the mylohyoid muscle and can present in various cervical spaces.

Ranulas are most common in individuals during their second decade of life and have a slight female predominance, although plunging ranulas are more frequent in males.

They originate from the sublingual gland due to damage to duct systems, often requiring minimal trauma.

Congenital predisposition may increase the incidence of plunging ranulas in certain ethnic groups.

There is a noted association between ranulas and HIV positivity in certain patient groups.

Ranulas present as soft, compressible, painless masses in the mouth that may follow trauma or oral surgery.

They rarely cause respiratory or feeding difficulties unless in young children.

Plunging ranulas typically manifest as soft, painless neck masses and are often associated with an intraoral component.

Diagnosis is primarily clinical based on appearance and location.

Imaging modalities like CT and MRI can help assess the extent of the ranula and any associated complications.

Ultrasound is a useful and accessible tool for visualizing the ranula and surrounding structures.

Management may involve surgical excision of the sublingual gland for definitive treatment.

Alternative methods include aspiration, incision and drainage, and sclerotherapy; each has varying success rates.

Oral nickel gluconate has shown promise in medical management of ranulas.

Excising the entire sublingual gland is the most effective approach with low recurrence rates.

Care must be taken to avoid injury to nearby structures, such as nerves and ducts during surgery.

Recurrence rates have been linked primarily to the choice of surgical technique rather than the ranula's size.

Salivary ranulas are uncommon, and few surgeons encounter them frequently.

The excision of the ipsilateral sublingual gland is regarded as the most reliable treatment method.

Surgical treatment can carry risks, but less invasive techniques may also be effective with low recurrence.