If you have been diagnosed with a parotid gland tumor, you may hear terms such as superficial parotidectomy and total parotidectomy. Although both are operations used to treat problems affecting the parotid gland, they do not involve removing the same amount of gland tissue.
The choice between them depends mainly on where the tumor is located, its size and characteristics, whether it is benign or malignant, and whether it extends into the deeper portion of the gland or nearby structures.
Understanding the difference can make the proposed treatment easier to follow and help you know why one procedure may be recommended over another.
If you are learning about the broader role of surgery in treating salivary gland conditions, our Salivary Gland Surgery page provides an overview of the conditions that may require surgical treatment.
First, What Is the Parotid Gland?
*AI-generated image - for illustration only. Clinical accuracy is not guaranteed.
The parotid glands are the largest of the major salivary glands. There is one on each side of the face, located in front of and below the ears. They produce saliva that helps with chewing, swallowing, and digestion.
An important structure called the facial nerve passes through each parotid gland. It controls the muscles responsible for facial expression, including smiling, closing the eyes, and moving the lips.
*AI-generated image - for illustration only. Clinical accuracy is not guaranteed.
The parotid is commonly described as having a superficial and a deep portion, with the facial nerve running between these portions. This anatomical relationship is particularly important when surgery is being planned.
What Is a Superficial Parotidectomy?
A superficial parotidectomy involves removing the part of the parotid gland located on the superficial side of the facial nerve, usually along with the tumor and an appropriate amount of surrounding gland tissue.
It may be considered when a tumor is located within the superficial portion of the gland and can be adequately removed without taking the entire parotid gland.
During the operation, the facial nerve is identified and carefully protected when it is not involved by the tumor. The surgeon then removes the affected portion of the gland and the tumor.
For selected benign tumors and some localized low-grade malignancies, removing the superficial portion may provide appropriate treatment while preserving the unaffected deeper part of the gland.
What Is a Total Parotidectomy?
A total parotidectomy involves removing both the superficial and deep portions of the parotid gland. This does not automatically mean that the facial nerve is removed. If the nerve is not involved by the tumor, surgeons generally aim to preserve it while removing the gland around it.
Total parotidectomy may be considered when a tumor involves the deep portion of the gland, extends across the facial nerve plane, is more extensive, or has features that require a wider surgical removal.
For certain malignant tumors, additional tissue or nearby lymph nodes may also need to be removed depending on the extent of disease.
Superficial vs Total Parotidectomy: The Main Difference
*AI-generated image - for illustration only. Clinical accuracy is not guaranteed.
| Feature | Superficial Parotidectomy | Total Parotidectomy |
|---|---|---|
| Amount of gland removed | Primarily the superficial portion | Superficial and deep portions |
| Typical reason | Tumor confined to the superficial portion in selected cases | Deep-lobe involvement or a more extensive tumor |
| Facial nerve | Identified and protected when possible | Identified and protected when possible |
| Does the whole gland need to be removed? | No | Yes, the major portion of the parotid gland is removed |
| Additional surgery | Depends on tumor type and extent | May be combined with lymph-node or other surgery when indicated |
The terminology can sometimes vary between surgeons and institutions, particularly as newer approaches such as partial or limited parotidectomy are also used for selected tumors. What matters most is understanding exactly which part of the gland your surgeon plans to remove and why.
Why Does the Tumor's Location Matter?
The location of a parotid tumor is one of the most important factors when deciding how much gland tissue needs to be removed. A tumor that remains within the superficial portion may be treated with a more limited operation when the tumor's characteristics and surrounding anatomy allow it.
A tumor located in the deep portion may require access to and removal of deeper gland tissue. Imaging studies such as MRI or CT can help define the location and extent of a parotid mass before surgery.
Tissue sampling may also provide information about the likely tumor type. However, the final surgical plan can depend on findings during the operation and the final pathology report.
Does a Benign Tumor Require a Superficial Parotidectomy?
Not necessarily. The operation selected for a benign parotid tumor depends on factors such as its exact location, size, relationship to the facial nerve, and the surgeon's assessment of how safely and completely it can be removed.
Some selected tumors may be treated with a more limited parotid operation rather than a traditional superficial parotidectomy. The aim is to remove the tumor adequately while preserving healthy gland tissue and important surrounding structures whenever possible.
For this reason, the term “superficial parotidectomy” should not be interpreted as the standard operation for every benign parotid tumor.
When Might Total Parotidectomy Be Recommended?
Total parotidectomy may be considered when a tumor cannot be adequately treated by removing only the superficial portion of the gland. Situations that may lead to consideration of a total procedure include:
- A tumor involving the deep portion of the parotid
- A tumor extending across the facial nerve plane
- A large or extensive tumor
- Certain malignant tumors where a wider resection is required
- Tumor involvement of surrounding structures
- Recurrence in a previously operated parotid gland in selected circumstances
What Happens to the Facial Nerve?
The facial nerve is a major consideration in both superficial and total parotidectomy because it runs directly through the parotid gland.
When the nerve is not involved by the tumor, the surgical team generally attempts to identify and preserve it. Even when preserved, the nerve can sometimes become temporarily weak after surgery because of manipulation or bruising.
In some patients, facial weakness improves gradually as the nerve recovers. Permanent facial weakness is less common but can occur, particularly when the tumor directly involves the facial nerve.
If a malignant tumor has grown into the nerve, removing the affected portion of the nerve may sometimes be necessary to achieve adequate cancer removal. Depending on the situation, nerve repair or reconstructive procedures may be considered.
Are the Risks Different Between Superficial and Total Parotidectomy?
Both operations involve working close to important nerves and other structures, so they carry some similar risks. However, a more extensive operation may involve a greater area of dissection and may have different recovery considerations.
Possible complications of parotid surgery include:
- Temporary or permanent facial weakness
- Numbness around the ear or surgical area
- Bleeding or infection
- Salivary leakage or a fluid collection
- Scarring
- Changes in the contour of the area near the ear
- Frey syndrome, which can cause sweating or flushing near the operated area while eating
Does Total Parotidectomy Cause More Dry Mouth?
Removing more parotid tissue reduces the amount of saliva produced by that gland. However, the parotid glands are only part of the body's saliva-producing system. The submandibular, sublingual, and minor salivary glands continue to produce saliva.
As a result, removal of one parotid gland does not normally mean that a person will stop producing saliva. The effect on overall mouth moisture varies between individuals.
Dry mouth can become a more significant concern when treatment involves multiple salivary glands or when radiation therapy affects the salivary glands.
Which Procedure Has a Longer Recovery?
Recovery depends on the extent of surgery as well as the patient's overall health and whether additional procedures are performed.
After either type of parotidectomy, it is common to experience some swelling, bruising, tightness, or numbness around the surgical area. Temporary facial weakness may also occur if the facial nerve has been manipulated during surgery.
A more extensive operation may require a longer recovery, particularly when it is combined with neck dissection or removal of other involved tissues. Your surgical team can give you a more accurate recovery estimate based on the planned procedure.
*AI-generated image - for illustration only. Clinical accuracy is not guaranteed.
The Bottom Line
Superficial and total parotidectomy are different in the amount of parotid tissue removed. A superficial parotidectomy generally removes the portion of the gland on the superficial side of the facial nerve, while a total parotidectomy removes both the superficial and deep portions.
The choice is based on the tumor's location, type, size, extent, and relationship to the facial nerve and surrounding structures. A total parotidectomy is not automatically necessary for every parotid tumor, and a superficial procedure is not automatically appropriate for every tumor that appears superficial.
For patients, the most useful question is not simply “Which surgery is better?” but rather “Why is this particular extent of surgery appropriate for my tumor?” Understanding that reasoning can help you have a clearer discussion with your surgical team about the expected benefits, risks, facial nerve preservation, and recovery.
