The Submandibular Gland: Why Some Necks Stay Full After Surgery

15 hours ago

5 min read

Some necks stay full after liposuction, after a platysmaplasty, even after a well-executed neck lift. In a proportion of those patients the fullness was never fat. It was the submandibular salivary gland, sitting below the muscle where no instrument used from outside can reach it.

Neck lift before and after
Facelift before and after
Facelift and neck lift before and 7 days after

Quick answer

The submandibular gland sits below the platysma muscle, just under the jawbone. When it is large or low it produces a rounded bulge that liposuction cannot touch. Partial reduction of the gland under direct vision during a deep neck lift is the only way to change it, and published series report low complication rates when it is performed by surgeons experienced in that anatomy.

Where the gland sits and why it matters

The neck has two fat compartments separated by the platysma muscle. Liposuction works in the compartment above the muscle. Below it lie the deep fat, the digastric muscles and the submandibular glands.

When all the structures above the muscle are tightened and the deep layer is left alone, the deep structures become relatively more visible. A gland that was previously camouflaged by fat and loose skin can look more obvious after surgery than before it, which is why it is assessed before the operation rather than discovered during it.

How it is recognised before surgery

Position: a discrete rounded mass two to three centimetres in front of the angle of the jaw, below the jawbone.
Feel: firmer than fat and not pinchable.
Behaviour: more visible when the chin is raised, and often asymmetrical between the two sides.
History: present for years without changing with weight, and sometimes visible in photographs from much earlier.

Ultrasound is used when the examination is unclear, both to confirm the gland and to exclude other causes of a neck lump.

What the published evidence says

This is one of the more debated areas of facial surgery, and the evidence has grown quickly. According to PubMed:

A single-surgeon series of 1,100 deep cervicoplasty patients, of whom 922 had gland reduction on 1,844 glands, reported no sialoceles, no uncontrolled bleeding and no postoperative haematomas; transient dry mouth occurred in two patients and recurrent gland inflammation in one (O’Daniel and Duff, Aesthetic Surgery Journal, 2026).
A series of 240 patients undergoing deep neck contouring with partial gland resection reported haematoma in 1.3%, seroma in 1.3%, infection in 0.8%, sialocele in 0.4% and transient lower-lip depressor weakness in 1.7%, with no permanent nerve injury (Lee and colleagues, Plastic and Reconstructive Surgery, 2026).
A systematic review of revision neck lift found five series totalling 188 cases, in which recurrent platysma banding, persistent submental fullness and gland descent were the most common reasons for revision; gland reduction had been used in 13% of patients (Şibar and colleagues, Aesthetic Plastic Surgery, 2026).

The same review notes that outcome measurement in this field is mostly surgeon-reported and that standardised patient-reported measures are rarely used, which is a fair caution to keep in mind.

Why it is not done routinely

The gland sits next to the facial artery and vein and close to the marginal mandibular branch of the facial nerve, which controls the lower lip. Reaching it requires a deliberate approach through the platysma, good lighting and retraction, and experience with the anatomy. Surgeons who do not work in this plane regularly are right to leave the gland alone rather than reduce it occasionally.

How it fits into the rest of the neck plan

Gland reduction is one step in a sequence, not an operation on its own. The usual order is: superficial fat, platysma repair, deep fat, digastric muscles, then the gland if it is still the limiting structure. The related decisions are covered in our articles on neck liposuction versus a neck lift and on why the neck sags, and the surgical approach is described on our deep plane facelift page.

What to ask at the consultation

Is the fullness under my jaw fat, gland or both?
If it is gland, is reduction part of the plan?
How often do you perform this step, and how do you protect the marginal mandibular nerve?
What will my neck look like if the gland is left alone?
What is the plan if a sialocele or dry mouth occurs?

Frequently Asked Questions

How do I know if my bulge is gland and not fat?

Fat is soft, moves when pressed and can be pinched between the fingers. A prominent submandibular gland is firmer, rounded and sits in a fixed position just below the jawbone, roughly two to three centimetres in front of the angle of the jaw. It often becomes more visible when the head is tipped back or when the neck is tightened after other surgery.

Can it be reduced without surgery?

No reliable non-surgical option exists. Botulinum toxin injected into the gland reduces its secretion and can shrink it slightly in some reports, but the effect is temporary and the evidence is limited. Liposuction and energy devices do not reach the gland at all.

Is removing part of the gland safe?

Published series report low complication rates in experienced hands. According to PubMed, a single-surgeon series of 1,100 deep neck patients, of whom 922 had gland reduction, reported no sialoceles and no postoperative haematomas, with transient dry mouth in two patients and recurrent gland inflammation in one (DOI). A separate series of 240 patients reported sialocele in 0.4% and transient lower-lip weakness in 1.7% (DOI).

Will my mouth go dry afterwards?

Only part of the gland is removed, and three other major salivary glands remain on each side. Persistent dry mouth is rare in the published series, although transient dryness has been reported.

Is this done in every neck lift?

No. A systematic review of revision neck lift series found gland reduction had been performed in about 13% of cases (DOI). It is reserved for necks where the gland is clearly the cause of the residual fullness.

What happens if it is ignored?

The neck can look improved immediately after surgery and then appear to relapse as the swelling settles, because the gland becomes visible once the fat and skin around it have been tightened. This is one of the common reasons patients seek revision neck surgery.

About the Author

This article was written and medically reviewed by Prof. Dr. Suleyman Tas, a plastic, reconstructive and aesthetic surgeon in Istanbul with over 20 years of experience. He is the author of Rhinoplasty in Practice (CRC Press, 2020), has more than 40 peer-reviewed scientific publications and five patents, and teaches facelift and rhinoplasty techniques to surgeons at international courses. Read more about Prof. Dr. Suleyman Tas.

Individual results vary. Before and after photos and videos are shared with patient consent. This article is for general information and does not replace a personal medical consultation.

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