Submandibular Gland Reduction for Neck Contouring: What Patients Should Know
⚠️ Seek emergency care immediately if you notice rapid neck swelling after surgery
Bleeding deep in the neck after submandibular gland surgery can compress your airway and become life-threatening very quickly. If you experience sudden, rapidly increasing neck swelling, difficulty breathing, or difficulty swallowing after your procedure, call 911 or go to the nearest emergency room right away. Do not wait to contact your surgeon's office.
Short answer
Submandibular gland reduction is a surgical technique used during facelifts or necklifts to improve the contour of the neck and jawline when the salivary glands beneath the jaw are prominent. It can meaningfully improve results but carries specific risks, including nerve injury, fluid collections (sialoceles), and rare but serious bleeding. Most complications are temporary and resolve within a few months.
What the research shows
The submandibular glands sit just beneath the jaw and can create a bulge in the neck that does not improve with fat removal or muscle tightening alone. Several surgical approaches exist to reduce gland size, including through a standard necklift incision, through the mouth, behind the ear, or using endoscopic (camera-guided) or robotic techniques [1].
A large systematic review of 51 studies covering nearly 3,000 patients found an overall complication rate of about 15%, with injury to the marginal mandibular nerve (the nerve controlling lower lip movement) being the most common issue, occurring in roughly 1 in 10 patients [1]. A separate review of over 3,300 patients reported nerve injury in about 4% of cases, hematomas (blood collections) in about 1%, and sialoceles (saliva pooling under the skin) in about 1.3% [6]. A single-surgeon series of 112 cases found that neurapraxia (temporary nerve disturbance) and sialocele each occurred in about 4.5% of patients, and all resolved fully within 3 months [2].
Minimally invasive approaches, such as endoscopic and intraoral methods, showed lower rates of bleeding and faster recovery. Tools like LigaSure (an energy-based sealing device) and partial rather than complete gland removal have also been shown to improve safety [1][6]. Importantly, one large series reported that no patient developed permanent dry mouth after partial gland reduction [2], though complete removal does reduce unstimulated saliva flow [8].
What this means for you
If your surgeon recommends addressing your submandibular glands during a facelift or necklift, it is because fat removal and muscle work alone may not achieve the neck contour you want. This is a well-described adjunct procedure, performed in about 13% of primary facelifts and 25% of revision facelifts in one large series [2].
Most complications, including temporary numbness or weakness around the lower lip and minor swelling from saliva pooling, tend to resolve on their own within weeks to months [2][6]. Serious complications are uncommon but do exist: bleeding deep in the neck can compress the airway and is considered a surgical emergency [2]. Patient satisfaction tends to be high, especially with minimally invasive approaches [1].
Caveats and what to ask your surgeon
Surgical techniques, outcome reporting, and patient selection vary widely across practices, which makes it difficult to give one universal risk figure [1]. Nerve injury rates in particular range from about 4% to nearly 10% depending on the approach used [1][6]. Revision necklift patients appear to face a higher risk of nerve disturbance than first-time patients [2].
Before proceeding, consider asking your surgeon: Which technique do you use and why? Will you perform a partial or full reduction? How many of these procedures have you performed? What is your personal complication rate? And how will you handle the gland if it contributes significantly to my neck fullness versus other causes like fat or muscle?