Blocked duct
Saliva collects under the oral lining when the duct is injured or blocked.
Ranula and mucocele are common benign cystic lesions caused by blockage or injury of minor salivary glands. Although they are usually painless, larger lesions can interfere with eating, speaking, and swallowing, and may need expert surgical excision for lasting relief.
A mucocele is a fluid-filled swelling that develops when a minor salivary gland duct is damaged or blocked, causing saliva to collect beneath the lining of the mouth. It most commonly occurs on the lower lip, inner cheeks, floor of the mouth, tongue, and soft palate, and usually appears as a soft, bluish, or transparent swelling.
Saliva collects under the oral lining when the duct is injured or blocked.
Lower lip, cheeks, floor of mouth, tongue, and soft palate are typical locations.
Lesions are often soft, bluish, or translucent.
A ranula is a type of mucocele that occurs in the floor of the mouth and arises from the sublingual salivary gland. It may be a simple ranula confined to the floor of the mouth or a plunging ranula that extends into the neck and causes swelling below the jaw. Large lesions can interfere with speech, swallowing, and tongue movement.
Confined to the floor of the mouth.
Extends through muscles into the neck.
Usually arises from the sublingual salivary gland.
Can affect speech, swallowing, and tongue movement.
Common causes include trauma to salivary gland ducts, lip or cheek biting, injury during eating, duct blockage, minor salivary gland damage, and inflammation. Patients may not always recall a clear cause, especially when the lesion appears gradually.
Trauma, biting habits, and duct blockage are frequent triggers.
Soft painless swelling, bluish cyst, and repeated rupture with refilling.
Floor-of-mouth swelling, tongue fullness, and sometimes neck swelling.
Diagnosis usually begins with a clinical examination to assess the size, location, and character of the swelling. When needed, imaging such as ultrasound, CBCT, CT, or MRI helps define larger ranulas, and fine needle aspiration may be used in selected cases when the diagnosis is uncertain.
Small mucoceles may occasionally rupture and resolve on their own, but persistent or recurrent lesions usually need surgery. Treatment options include complete mucocele excision with the affected minor salivary gland, ranula excision with sublingual gland removal, and surgery for plunging ranulas to remove the gland and address the neck component.
The cyst and involved minor salivary gland are removed to reduce recurrence.
Simple ranulas often need removal of the lesion and sublingual gland.
Larger lesions may need neck-component management as well.
Removing the affected gland helps lower the chance of the lesion returning.
The procedure is done under local or general anesthesia, depending on lesion size and location. A small incision is made inside the mouth, the cyst and involved salivary tissue are carefully removed, and the wound is closed with dissolvable sutures. Most cases are completed as day-care surgery, and recovery is typically quick with minimal discomfort.
Most patients go home the same day after the procedure.
Discomfort is usually mild and short-lived.
Dissolvable sutures are commonly used to close the incision.
After surgery, patients should take prescribed medications, maintain good oral hygiene, eat soft foods for a few days, avoid trauma to the surgical site, and attend follow-up appointments. Most people return to normal daily activities within a few days.
Take all prescribed medicines as directed.
Soft foods and careful oral cleaning support healing.
Avoid biting, trauma, or pressure on the treated area.
Review visits help confirm healing and detect recurrence early.
Although uncommon, potential risks include bleeding, infection, temporary swelling, recurrence, and rare injury to nearby salivary ducts. Complete removal of the affected gland significantly reduces the chance of recurrence.
Standard surgical risks that are usually minor and manageable.
Less likely when the cyst and associated gland tissue are fully removed.
Nearby salivary ducts can be affected, but this is uncommon.
No. A mucocele is a benign salivary gland cyst and is not cancer.
Small ranulas may occasionally reduce in size, but many require surgical treatment to prevent recurrence.
The procedure is performed under anesthesia, and postoperative discomfort is usually mild and manageable with medication.
Recurrence is uncommon when both the cyst and the affected salivary gland tissue are completely removed.
Consult an Oral and Maxillofacial Surgeon if you notice a persistent swelling inside the mouth, a bluish lump on the lower lip or floor of the mouth, difficulty swallowing or speaking, recurrent cysts that burst and refill, or swelling extending into the neck. Early evaluation helps ensure proper diagnosis and treatment.