She Was Sure It Was Her Wisdom Tooth and It Was Not

Quick answer: A neck lump is not automatically dental. Lymph nodes swell from infections anywhere in the head and neck, and a firm lump that has been present for more than three weeks, is painless, and is not shrinking needs referral regardless of what the nearby teeth are doing.

The call

She had booked to have a wisdom tooth taken out. She had already decided that was the answer, and she had a lump in her neck to prove it.

Adina, 41, from RBS Daled, had felt a lump under the right side of her jaw about seven weeks earlier. Her lower right wisdom tooth was partly erupted and had given her trouble a year ago. The connection seemed obvious to her, and it is a reasonable inference.

She was booked for an extraction assessment and the assessment is what stopped it.

What we found

The tooth was examined first, because the assumption had to be tested rather than dismissed.

The lower right wisdom tooth was partially erupted with an operculum — a flap of gum over part of the crown. It was not tender, the surrounding gum was neither red nor swollen, and there was no discharge, bad taste, swelling or restriction of opening. A radiograph showed no decay and no bone loss around it.

Pericoronitis, which is what she had had a year earlier, is an acute condition. It hurts, the gum is inflamed, the flap is swollen, and there is often a foul taste. It can certainly cause a tender, mobile lymph node — one that appears with the flare and shrinks over a fortnight as it settles.

None of that described her tooth or her lump, and every other tooth was sound. There was no dental cause on that side or any other.

The lump itself:

• About 2cm, in the upper cervical chain below and behind the angle of the jaw.
• Firm, firmer than a reactive node feels.
• Not tender at all.
• Not obviously mobile — it did not slide easily under the fingers.
• Present seven weeks and, by her account, slightly larger than when she first noticed it.
• Overlying skin normal.

The whole neck was examined systematically, both sides, plus the thyroid, the supraclavicular fossae and behind the ears. Nothing else was found.

A full soft tissue examination of the mouth was normal throughout, which mattered — a neck node can be the first sign of a primary lesion elsewhere in the head and neck.

Systemic questions: no fever, no night sweats, no unexplained weight loss, no recent throat infection or skin lesion on the scalp or face. She was a non-smoker.

What separates a reactive node from one needing referral:

• Reactive: appears with an infection, tender, soft or rubbery, mobile, usually under 1cm, shrinks within two to four weeks.
• Needs referral: present over three weeks with no infection to explain it, firm or hard, painless, fixed or poorly mobile, over 1 to 2cm, growing, in the supraclavicular region, or accompanied by fever, night sweats or weight loss.

Hers met five of the second list.

What we did

Cancelled the extraction. Removing a healthy asymptomatic wisdom tooth would have achieved nothing, delayed the referral by weeks, and very likely been credited with any subsequent change in the lump.

Referred urgently the same day, to the ear, nose and throat service, with a letter stating explicitly that the dentition had been examined, that the wisdom tooth was asymptomatic, that no dental cause had been found, and that the node had the features listed above.

That explicit exclusion of a dental cause is the most useful thing a dentist contributes to this referral. Without it, the lump is likely to be attributed to the visible partially erupted wisdom tooth by whoever sees it next, and the investigation stalls.

She was told plainly what had been found, that it needed investigating quickly, and that the wisdom tooth was not the cause. She was not given a probable diagnosis, because there was none to give.

The outcome

She was seen within two weeks. Ultrasound, fine needle aspiration, and further imaging led to a diagnosis of lymphoma.

She began treatment under haematology and, two and a half years later, is in remission.

The wisdom tooth is still there. It has never caused a further problem and there was never a reason to remove it.

The point is not that neck lumps are usually serious — the overwhelming majority are reactive nodes from ordinary infections and settle on their own. It is that "there is a wisdom tooth nearby" is not an explanation, and that seven weeks of assuming it was is seven weeks.

What to do if this happens to you

1. Any neck lump present over three weeks should be examined, whatever you think is causing it.
2. Do not assume a nearby tooth explains it. A tooth causing neck swelling is usually obviously symptomatic.
3. Note whether it is tender. Painless and firm is more concerning than sore and soft.
4. Note whether it is changing. Growing matters. Shrinking is reassuring.
5. Mention fever, night sweats or weight loss. They change the urgency.
6. Ask for the referral letter to say a dental cause was excluded. It prevents the investigation being sent back.

A lump in your neck and not sure whether it is dental? Book an examination at Ramat Beit Shemesh Urgent Dental Care. 055-985-8845 · WhatsApp https://wa.me/972559858845 · Harav Kook 28/1, Beit Shemesh

This is a composite clinical story. It reflects a presentation we see regularly in Beit Shemesh and Ramat Beit Shemesh; the name and details are illustrative and are not those of a real patient.