Thyroid Surgery

Lateral Neck Dissection

Thyroid Cancer Risk Factors

General Information

All of the lymph nodes in the lateral neck compartment from levels IIa – Vb.

  • Terms for this include lateral neck dissection and modified radical neck dissection.
    • Superior (upper) border is the posterior belly of the digastric muscle.
    • Inferior (lower) border is the transverse cervical artery.
    • Lateral border is the posterior aspect of the sternocleidomastoid muscle.
    • Medial border is the carotid artery.
    • The deep border is the deep muscles of the neck.

Image Source: Mary Ann Liebert, Inc.

There are right and left lateral neck compartments.

  • When thyroid cancer spreads to lymph nodes, it typically does not cross midline, therefore only the side that has the thyroid cancer is removed.
    • It is possible for cancer to be on both sides of the thyroid and spread to both lateral neck compartments, therefore it is always important to rule out that cancer is not also present in the opposite lobe (side) of the thyroid prior to surgery.

A comprehensive lateral neck dissection involves removing all the inessential tissue within this compartment, leaving only the critical nerves, blood vessels, and muscles behind.

  • The analogy is made of removing berries (cancerous lymph nodes) from a tree or bush.
    • If you try to pick just only the berries (remove only the cancerous lymph nodes) there is an increased risk to leave berries (cancer) behind.
    • If you systematically strip the branches of all their leaves and berries, you are far less likely to leave cancer behind.

Two main reasons:

  • The thyroid cancer has spread to the lymph nodes in this neck compartment (confirmed by biopsy prior to surgery or biopsy during surgery).
  • Guidelines for some aggressive forms of thyroid cancer (such as Medullary Thyroid Cancer), consider prophylactic lateral neck dissection even if spread to these lymph nodes has not been proven with biopsy if pre-surgery Calcitonin levels are elevated above a certain threshold.

This is typically performed at the same time as a total thyroidectomy with central neck dissection or if the cancer has returned following initial surgery (see ‘revision surgery’ section).

Lateral Neck Dissection

Frequently Asked Questions

The surgery is performed under general anesthesia in the operating room.

  • General anesthesia involves receiving medication through an IV which causes you to go completely asleep, then a breathing tube is placed through your mouth and down your windpipe to help you breathe while you are asleep.
    • A special type of breathing tube is used to help monitor the recurrent laryngeal nerve (controls voice and swallowing).
    • The breathing tube is removed before you wake up.

An incision is made low in the midline neck, in a natural horizontal crease of the skin, extending laterally (to the affected side) along the same natural crease to the back border of the sternocleidomastoid muscle.

  • If no natural crease is present, the incision is made in the natural hallow of the neck along a shirt collar line.
  • The incision may need to be longer if the patient has a larger neck requiring a deeper and more challenging dissection, or a very long neck.

If a previous incision is present, the same incision came be used (potentially extended if only a thyroidectomy was previously performed).

For a single sided lateral neck dissection, surgery takes about 1.0 – 1.5 hours.

  • If being performed at the same time of a thyroidectomy and central neck dissection, these surgical times are added together (~ 4 hours).
  • If both lateral neck dissections are being performed this could take up to 6 hours.

No. If a lateral neck dissection is being performed, alone or together with a total thyroidectomy and/or central neck dissection, the patient will always spend the night in the hospital.

The entire day lasts ~ 4 – 8 hours.

  • Arrive 2 hours prior to surgery.
  • Length of surgery plus time to put you to sleep and wake you up, ~ 1.0-1.5 hour if lateral neck dissection alone, 4 hours if performed with a total thyroidectomy and central neck dissection, 6 hours if bilateral (both right and left) lateral neck dissections are performed.
  • 1 hour recovering before going to your hospital room.

1 hour after surgery, you are transferred to your hospital room where your family and/or friends can see you.

The nursing staff takes care of you overnight.

Dr. Kay and his team see you the following morning and you are usually ready to be discharged home by 10:00 am provided your recovery is going as expected.

Given the amount of discomfort and limited range of motion in the neck, it is not safe to drive home the day following surgery. Therefore, you will need to arrange for someone to drive you home the day after surgery.

Yes, all lateral neck dissection surgeries require a drain to be placed.

A drain is a small rubber tube placed in the neck connected to a suction bulb.

  • It sucks out any fluid or blood that can develop following surgery and helps the empty space (void) in the neck created by removing the lymph nodes seal down on itself.

You will go home with the drain and Dr. Kay’s office will arrange for an appointment to have this removed in the office the following day (2 days after surgery).

  • The drain can get wet in the shower.
  • The nursing staff will show you how to take care of the drain before you leave the hospital.
  • You will be instructed to record how much fluid is coming out of the drain and bring this with you to your appointment.

Dr. Kay calls you with the pathology report 2-3 business days following the surgery.

When you schedule surgery, a post-operative appointment will also be scheduled for you ~ 6 weeks following your surgery.

You need a physical performed by your primary care provider to clear you prior to surgery.

If you see a sub-specialist for a significant medical issue like a cardiologist or pulmonologist, Dr. Kay will ask you to be cleared by this specialist as well.

If you are on a blood thinner, Dr. Kay will ask you to get permission to stop this blood thinner for the appropriate amount of time before surgery (varies by medication type) and for 5 days following surgery as well.

  • If you cannot come off the blood thinner, the drain may need to stay in place up to 5 days following surgery.

What to Expect Following Surgery

You can expect to experience pain and swelling around the incision lasting up to 1 week.

  • Mild bruising may also be expected which will resolve over the course of 1 – 2 weeks. This bruising may travel down the front of the chest due to gravity before is fully resolves.

You can also expect to experience a sore throat and hoarse voice lasting up to 1 week.

  • There are no voice restrictions during this period.

Everyone experiences pain in different ways and has different pain thresholds, therefore your experience may differ to some extent.

Because of extensive dissection along the large muscle on the side of the neck (sternocleidomastoid muscle), your neck will be very stiff immediately following surgery.

Your activity in life will be limited (namely driving and lifting things) until this stiffness resolves.

Therefore, it is very important to immediately work on range of motion exercises with your neck following your surgery.

  • Up and down, sided to side, soft circles in both directions.
  • Working through tightness is ok. If the movement causes pain, then stop.

Because of the need to cut through the sensation nerve fibers in the skin, you can expect to experience numbness from the jaw and ear lobe, down to your collar bone (sometimes even to your chest).

This numbness can last up to 9 months.

As the sensation nerve fibers start to heal and regain function, it is not uncommon to experience sensations of tingling, burning, itching, or pinching / shooting pains.

  • These sensations are completely normal and indicate appropriate healing of the sensation nerve fibers in your neck.
  • These sensations will resolve over the course of several weeks to months.

For 24 hours: Limit your activity for the first 24 hours following surgery and get plenty of rest as you recover from general anesthesia.

For 1 week: No heavy lifting or pushing (> 10lbs), active sports (e.g., running or jumping), strenuous exercise, heavy household work, or any activities that elevate your heart rate or blood pressure in order to reduce the risk of bleeding in your neck. Objects that cannot be lifted with one hand are considered too heavy.

  • You may walk at a normal pace and do light household activities during the first week.

There are no activity restrictions after 1 week.

In general, you may plan to return to work in 10 days, 2 weeks if your job requires manual labor, or as otherwise instructed.

Due to the sore throat caused by the breathing tube and surgical dissection, we recommend starting with liquids and soft foods.

You may progress to solid foods (your normal diet) as tolerated; this may take 1 – 3 days.

There are no restrictions in the positioning of your head and neck following surgery. You may relax and sleep in whatever position that is comfortable for you.

  • No need to sleep with your head elevated.

It is not uncommon for your sleep cycle to be affected by general anesthesia. Do your best to resume normal sleep patterns and avoid excessive daytime napping following the initial 24-hour rest period.

You can drive once you are off the strong (prescription) pain medication and when you can turn your head / neck to check your blind spots without hesitating. This may take 3 – 14 days depending on the stiffness in your neck.

Your incision was closed in two layers:

  • Deep stitches which will dissolve on their own over the course of 8 – 10 weeks.
  • A superficial layer of blue skin glue and strips of white bandages (steri-strips) embedded in the glue.

You may bathe or shower as soon as you like after surgery.

  • It is ok to allow soap and water to run over the bandage.
  • Do not submerge under water for extended periods of time (> 1 min).
  • Do not scrub the incision; pat it gently dry with a towel afterwards.

If the glue and bandage is still present 2 weeks after surgery, you may peel off the bandage (Steri-Strip) and the rest of the glue.

  • It is ok if the bandage comes off before two weeks. No need to cover the incision.
  • If the white bandages start to curl off the skin before two weeks, you may carefully use scissors to trim the curled edges.

After the bandage comes off, you may notice several small bumps under the skin along your incision line and the incision line may appear raised.

  • The bumps are the deep stitches that have yet to dissolve (this can take up to 8 – 10 weeks). They will dissolve with time and massages (see below) and the incision will eventually heal flat.
  • If there are any concerns with the appearance of your incision once the bandage comes off, please take a picture and send it to Dr. Kay via MyChart messaging.

As your incision heals, it is not uncommon to experience sensations of tingling, burning, itching, or pinching / shooting pains.

  • These sensations are completely normal and indicate appropriate healing of the sensation nerve fibers in your neck.
  • These sensations will resolve over the course of several weeks to several months.

Once the bandage is off, please purchase over the counter Vitamin E oil from a pharmacy or supermarket (Vitamin E oil capsule which can be broken open are an acceptable alternative).

  • Use the oil to massage your wound with the pads of your fingers, using a slow circular motion, as deep as you can tolerate.
  • Perform this twice per day for 5 minutes at a time, for 1 month. You may massage more frequently or for longer periods.
  • You may also use different kinds of scar ointments / creams such as Mederma, Biocorneum, etc. or silicone strips.
    • The important thing is that you do the massages as instructed above.

Once the bandage is off, please keep your incision out of direct sunshine for the first 3 months after surgery (using shade, a scarf, and/or sunscreen with SUV 30 or higher with both UVA and UVB protection) in order to prevent discoloration of the scar.

Pain control:

Ice compresses can help to treat swelling and pain around the incision. Apply for 10 min at a time. You can repeat every 30 minutes as needed.

Sore throat lozenges (particularly those with the active ingredient ‘Benzocaine’ such as found in Cepacol lozenges) will help to treat the discomfort deep in your throat.

Drinking fluids frequently will help the small scratches inside the throat caused by the breathing tube to heal more quickly and also relieve your pain faster.

Over the counter Tylenol (acetaminophen) can be taken every 6 hours as needed for pain relief, up to 1,000 mg each dose, do not exceed 4,000 mg total in 24 hours. Do not take 3,000 mg total per day for > 3 consecutive days.

Over the counter NSAID’s (Non-Steroidal Anti-Inflammatory Drugs)

  • Ibuprofen, Motrin, or Advil can be taken every 6 hours as needed for pain relief, up to 400 mg each dose, do not exceed 1,600 mg total in 24 hours. Do not take more than 1,200 mg total per day for > 3 consecutive days.

OR

  • Aleve (naproxen) can be taken every 12 hours as needed for pain relief, up to 550 mg each dose, do not exceed 1,100 mg total in 24 hours. Do not take 1,100 mg total per day for > 3 consecutive days.
  • These NSAID’s can be alternated with Tylenol as in the below examples:
    • 500 – 1,000 mg of Tylenol every 6 hours, alternating and staggering with Ibuprofen 200 – 400 mg every 6 hours (essentially taking pain medication every 3 hours as needed).
    • 500 – 1,000 mg of Tylenol every 6 hours, alternating and staggering with Aleve 225 – 550 mg every 12 hours.

In situations when the above pain control regimen does not control your pain symptoms adequately, you were prescribed 5 tablets of a low dose narcotic medication (either Tramadol or Hydrocodone / Acetaminophen).

  • You can take 1-2 tablets of this every 6 hours as needed for pain control.
  • If required, these prescription pain medications are not usually needed for more than 24 hours after surgery.
  • If you were prescribed Hydrocodone / Acetaminophen, please do not take any additional Tylenol or Acetaminophen at the same time.
  • These medications may cause you to be drowsy. Do not drive / operate heavy machinery, drink alcohol, or take any other sedating medications while using the prescription narcotic pain medication.

Anti-Nausea Medication

If you are discharged home on the same day of surgery, you will be given an antinausea prescription called Zofran (ondansetron). This comes in a tablet form that dissolves underneath your tongue.

You can use this as needed if you are experiencing nausea. Please have a low threshold to use this in order to prevent vomiting (which can increase the risk of bleeding in your neck).

Stool Softener

You will receive narcotics as part of your general anesthesia on the day of surgery and you may also take a prescription narcotic pain medication following surgery. These narcotic medications can cause constipation.

In order to prevent this, you may consider purchasing an over-the-counter stool softener (such as docusate or senna) and take for 24-48 hours following surgery as directed on the package (especially if you are prone to constipation).

  • If you remain constipated for > 48 hours after surgery despite the use of a stool softener, you may purchase a bottle of over-the-counter magnesium citrate and take as directed. If your constipation persists despite this, please contact the office for further instructions.

Prior Medications

  • You should resume taking all other medications the day after surgery, unless instructed otherwise by your primary care provider.

Blood Thinning Medications

If you were on any blood thinners (Plavix, Coumadin, Eliquis, Xarelto, Aspirin, etc.) prior to surgery, please do no restart the medication until 5 days after your surgery to limit the risk of bleeding, unless instructed otherwise.

Due to the effects of the breathing tube being placed during surgery, you may experience thick mucus in your throat for 24-48 hours. It is ok to gently clear your throat and cough to clear this mucous.

If the sensation of mucous in your throat persists for > 48 hours, it is usually not because there is still mucous there. At this point, persistent inflammation and sensitivity of the vocal cords caused by the breathing tube can mimic the sensation of mucous and is best treated by drinking plenty of liquids, using over the counter throat lozenges with the active ingredient ‘Benzocaine’ such as found in Cepacol lozenges, and avoiding further throat clearing / coughing.

  • Clearing your throat / coughing may cause your throat symptoms to worsen or persist, similar to scratching a mosquito bite.

Swelling beneath or near your incision site, particularly if it is visibly noticeable and/or causing pressure in the neck.

  • Please call the office at 630.938.6161 and if possible, send a picture of your incision (one from directly in front of you and one from the side) via MyChart messaging.

If you notice rapid and progressive swelling in your neck, or bleeding from your incision, please call 911 as this could represent a hematoma, or active bleeding in the neck, and this is a medical emergency.

If you notice redness and itching around the bandage, especially if starting 24-48 hours after surgery, you may be experiencing an allergic reaction to the skin glue or the white steri-strip bandages.

  • For this you can try taking over the counter Benadryl as directed on the package. If the symptoms do not resolve, please call the office at 630.938.6161 for further instructions as the bandage and glue may need to be removed.

Please record your drain output twice daily.

OK to get the drain wet in the shower.

Dr. Kay’s office will call to arrange drain removal 2 days following your surgery.

  • If the drain output is > 50 cc or ml in a 24-hour period, please call the office at 630.938.6161 before coming to your appointment. In this scenario, the drain may need to stay in place longer.

When surgery is scheduled, an appointment should have been made for you to follow-up ~ 6 weeks after surgery.

content-image
Lateral Neck Dissection

Risks of Surgery

Risk of injury to the Spinal Accessory Nerve (Cranial Nerve XI).

This nerve controls the shrugging movement of your shoulder and the initial raising of your arm out to the side.

  • There is a 5% chance that this nerve is overmanipulated, stretched, or overheated by an instrument during surgery resulting in a temporary weakness lasting up to 9 months.
  • There is a 1% chance that the nerve is severely injured and never recovers or cut inadvertently, which would result in permanent weakness.
content-image

Risk to the Marginal Branch of the Facial Nerve (Cranial Nerve VII).

This nerve controls the movement of your lower lip (important in smiling, showing your lower teeth, and pursing your lips to drink or kiss).

  • There is a 5% chance that this nerve is overmanipulated, stretched, or overheated by an instrument during surgery resulting in a temporary weakness (asymmetric smile) lasting up to 9 months.
  • There is a 1% chance that the nerve is severely injured and never recovers or cut inadvertently, which would result in permanent weakness.
content-image

Risk to the Thoracic Duct

This structure allows lymphatic fluid (aka chyle) to enter the blood system via the internal jugular vein.

This structure is most commonly located in the left lateral neck compartment, but very rarely can also be present on the right.

  • If the thoracic duct is injured during surgery, it will cause a chyle leak (lymphatic fluid spilling into the neck).
  • If this leak is not recognized and repaired during the surgery, it will require bed rest, special medication, and a strict non-fat diet in the hospital which could last up to 1-5 days.
    • The risk of a chyle leak is ~5%.
  • If the chyle leak does not resolve with conservative measures (as above), then it will require surgery in the operating room to repair the leak.
    • The risk of requiring surgery to repair the leak is ~ 1%.
Central Neck Dissection

Risk to the Hypoglossal Nerve (Cranial Nerve XII).

This nerve controls the movement of your tongue (important in talking and swallowing).

  • There is a 1% chance that this nerve is overmanipulated, stretched, or overheated by an instrument during surgery resulting in a temporary weakness lasting up to 9 months.
  • There is a < 1% chance that the nerve is severely injured and never recovers or cut inadvertently, which would result in permanent weakness.

For all types of thyroid cancer surgery, surgical outcomes / cure rates are the highest and complication rates are the lowest when surgery is performed by a high-volume surgeon (> 50 thyroid cancer surgeries per year).

Central Neck Dissection

What are the risks for all surgeries

Pain following surgery typically lasts up to 5-7 days and is usually tolerated with little to no narcotic use (see more information in the ‘What to Expect Following Surgery’ section).

There is very low risk (~1 %) for infection following hemithyroidectomy.

Antibiotics are given to you during surgery, but none are routinely used following surgery.

  • Signs of infection include redness and swelling near the incision, worsening pain, and fever.

There is a 1% chance of significant bleeding following surgery.

Signs of bleeding include significant swelling in the front of the neck, similar to the appearance of a bullfrog.

Sometimes this bleeding stops on its own, other times it does not and it can be life threatening requiring urgent surgery to stop the bleeding.

  • This is why activity levels are restricted for 1 week following surgery (see more in the ‘What to Expect Following Surgery’ section.

Risks for bleeding are higher when a patient cannot be taken off their blood thinners completely.

  • In this scenario the patient will be watched closely overnight in the hospital and a drain will be placed to limit this risk.

You are required to be cleared by your primary care provider prior to surgery and any other sub-specialty providers who provide care for important medical conditions.

  • In general, the risks of anesthesia are higher with age and presence of significant medical conditions.
  • Your anesthesiologist will discuss these risks with you in detail on the day of your surgery.

The incision is made as small as possible (based on thyroid lobe size and the patient’s anatomy) and attempted to be hidden in a natural skin crease (if present) or hollow of the neck.

Ultimately it is up to how your body heals (based on previous incisions or scar).

Typically, incisions in the neck heal very nicely.

If there is a history of keloid formation, a steroid called Kenalog may be injected into the skin at the time of surgery to lower the risk of keloid formation as best as possible.

Revision Surgery


When a previous lateral neck dissection was performed in the past and a repeat lateral neck dissection for residual / recurrent cancer on the same side is then performed at a later date, it is considered revision surgery.

Revision lateral neck dissection presents unique risks:

  • Scar tissue will be present from the prior surgery which complicates the surgical dissection and increases the risk of injury to nearby important structures.
    • The risk to injuring the spinal accessory nerve (Cranial Nerve XI), marginal branch of the facial nerve (Cranial Nerve VII), and hypoglossal nerve (Cranial Nerve XII) is roughly doubled:
      • 10% (from normally 5%) for temporary weakness lasting days, sometimes up to 9 months.
      • 2% (from normally 1%) for permanent weakness.
    • The risk for causing a chyle leak is roughly doubled:
      • 10% for temporary leak requiring conservative treatment in the hospital.
      • 2% for surgery to seal the leak.

To learn more about all Thyroid and Parathyroid Surgeries click here.

To learn more about the Thyroid return to the Thyroid home page here.

To learn more about the Parathyroid return to the Parathyroid main page here.

How Do I Schedule Surgery?

You can call 630.938.6161 and ask to speak to the surgery scheduler
to find a date that works well for you and Dr. Kay.