Incisional vs Excisional Biopsy

Specimen containers comparing incisional and excisional biopsy tissue samples

Author: Shazia Abou Talib•Reading Time: 6 Minutes

When a surgical biopsy is recommended, you may hear the words incisional or excisional. They sound similar, but they describe two different ways of collecting tissue.

An incisional biopsy removes part of an abnormal area. An excisional biopsy removes the entire visible abnormal area, sometimes with a border of surrounding tissue. Both procedures provide tissue for examination by a pathologist.

Neither biopsy is automatically better than the other. The appropriate choice depends on the size and location of the abnormal area, the suspected condition, the amount of tissue needed, and whether removing the entire area could affect appearance or function (American Cancer Society).

For an overview of needle, skin, surgical, and image guided procedures, read Types of Biopsies: A Guide to the Different Procedures.

Incisional vs Excisional Biopsy at a Glance

Feature	Incisional Biopsy	Excisional Biopsy
Tissue removed	Part of the abnormal area	The entire visible abnormal area
Common reason	The area is large, deep, or difficult to remove completely	The area is small enough to remove safely
Main purpose	Obtain enough tissue for diagnosis	Obtain tissue for diagnosis while removing the visible area
Incision	Usually smaller	May be larger
Margins	Clear margins are not usually expected	Margins may be examined
Recovery	Depends on the depth and location	May take longer if more tissue is removed
Further treatment	May be needed after diagnosis	May still be needed depending on the result and margins

The word excisional does not necessarily mean that the entire medical problem has been treated. It means that the visible abnormal area was removed during the biopsy.

What Is an Incisional Biopsy

An incisional biopsy removes a representative portion of an abnormal growth, mass, lesion, or area of tissue. The sample is sent to a pathology laboratory, where it is examined under a microscope.

This approach may be considered when:

The abnormal area is too large to remove safely in one procedure
Removing the entire area could affect an important structure
The location makes complete removal difficult
The diagnosis needs to be confirmed before a larger operation is planned
Enough tissue cannot be obtained through a needle biopsy

The person performing the biopsy selects an area that is likely to provide useful diagnostic information. In some cases, imaging, examination findings, or the appearance of the abnormal tissue helps guide this decision.

Because only part of the area is removed, an incisional biopsy is generally performed for diagnosis rather than complete treatment (Johns Hopkins Medicine).

What Is an Excisional Biopsy

An excisional biopsy removes the entire visible lump, lesion, or abnormal area. A small border of nearby tissue may also be removed, depending on the reason for the procedure and the part of the body involved.

This approach may be considered when:

The abnormal area is relatively small
It can be removed without causing unacceptable harm
The complete structure is needed for accurate examination
Removing the area may provide both diagnosis and treatment
A previous needle biopsy did not provide enough information

For example, an excisional biopsy may be used for certain skin lesions, lymph nodes, breast abnormalities, or small soft tissue masses. The decision is individualized because the same approach is not appropriate for everybody site or suspected condition.

When melanoma is suspected, complete removal of the lesion is often preferred when it can be performed safely. An incisional approach may be used when the entire area cannot easily be removed (American Cancer Society).

Why One Procedure May Be Chosen Over the Other

The choice between an incisional and excisional biopsy is not based on one rule. Several factors are considered together.

Size and Location

A small, accessible lump may be suitable for an excisional biopsy. A large abnormal area or one located near nerves, blood vessels, muscles, or organs may be sampled with an incisional biopsy.

Possible Diagnosis

Some conditions require a larger or more intact tissue sample so the pathologist can evaluate the arrangement of the cells. The suspected diagnosis can therefore affect how much tissue is collected.

Appearance and Function

Removing an entire area may create a larger scar or affect movement and function. This can be especially important when the abnormality is on the face, hand, foot, or near another sensitive structure.

Previous Test Results

A surgical biopsy may be recommended when a fine needle aspiration or core needle biopsy did not collect enough tissue or when the findings did not fully explain the abnormality.

Future Treatment Planning

Sometimes it is safer to confirm the diagnosis with an incisional biopsy before planning a larger operation. This allows the treatment approach to be based on the pathology result rather than assumptions.

What Happens During the Procedure

The details vary according to the body site, but both procedures usually follow a similar sequence.

The biopsy area is identified and cleaned. An anesthetic is given, and an incision is made. Tissue is removed and sent to the pathology laboratory. Bleeding is controlled before the incision is closed with stitches, surgical glue, or sterile strips.

During an Incisional Biopsy

The clinician removes a selected portion of the abnormal tissue. The amount collected must be large enough for the necessary laboratory examination while limiting unnecessary injury to nearby tissue.

The remaining abnormal area stays in place until the results are available and the next step is decided.

During an Excisional Biopsy

The clinician removes the entire visible abnormality. Depending on the situation, a small amount of surrounding tissue may also be removed.

The specimen may be marked so the pathologist can identify its orientation and examine the edges. These edges are called margins.

Many surgical biopsies are outpatient procedures, although deeper biopsies or procedures requiring general anesthesia may involve longer monitoring (American Cancer Society; National Health Service).

Anesthesia, Stitches, and Scarring

A superficial biopsy may be performed using local anesthesia, which numbs the area while you remain awake. Regional anesthesia, sedation, or general anesthesia may be used for larger or deeper procedures (Johns Hopkins Medicine).

The type of closure depends on the size and location of the incision. Some wounds are closed with dissolvable stitches. Others require stitches that are removed later. For many skin biopsies, removal may occur within approximately 5 to 14 days, but timing differs by body site and should follow the instructions provided for your procedure (Guy’s and St Thomas’ NHS Foundation Trust).

Both procedures can leave a scar. An excisional biopsy may create a longer scar because the entire abnormal area is removed. However, scar size also depends on the location, depth, closure method, healing process, and individual skin characteristics.

Understanding Margins After an Excisional Biopsy

Margins are the edges of the tissue removed during a procedure.

A negative or clear margin means that abnormal or cancerous cells were not identified at the outer edge of the specimen. A positive or involved margin means that these cells extend to the edge.

A positive margin may suggest that abnormal tissue remains, but the meaning depends on the diagnosis and procedure. Additional surgery or another treatment may be recommended.

Margins are interpreted differently after an incisional biopsy because the purpose is to remove only part of the abnormal area. The edges are not usually expected to be clear.

It is important not to assume that an excisional biopsy has completed cancer treatment. If cancer is found, further surgery may be needed to obtain wider margins. Other treatments may also be considered according to the cancer type, stage, location, and pathology findings.

Recovery After Incisional and Excisional Biopsy

Recovery depends more on the location, depth, amount of tissue removed, and type of anesthesia than on the procedure name alone.

Common temporary symptoms include:

Soreness around the incision
Mild swelling
Bruising
A pulling or tight sensation
Temporary numbness near the wound
Tiredness after sedation or general anesthesia
Discomfort when moving the affected area

An excisional biopsy may require more recovery time if it creates a larger wound. However, a deep incisional biopsy can also cause significant discomfort even when only part of the abnormality is removed.

Follow the wound care and activity instructions provided for your procedure. These may include temporary limits on lifting, exercise, driving, bathing, or work.

Possible Risks and Warning Signs

Incisional and excisional biopsies are commonly performed, but every surgical procedure has potential risks. These include bleeding, infection, pain, scarring, numbness, wound separation, and reactions to anesthesia. The risk of injury to nearby structures depends on the biopsy location.

Seek prompt medical advice for:

Bleeding that does not stop with the recommended pressure
Rapidly increasing swelling
Severe or worsening pain
Spreading redness or warmth around the wound
Pus or foul smelling drainage
Fever or chills
An incision that opens
New weakness, loss of sensation, or difficulty moving the area

Breathing difficulty, fainting, confusion, or other severe symptoms may require emergency care.

Preparing for the Procedure

Before the biopsy, make sure the clinical team knows about medicines and supplements you take, allergies, bleeding conditions, pregnancy, and previous problems with anesthesia.

Helpful questions include:

Why is an incisional or excisional biopsy recommended
How much tissue will be removed
What type of anesthesia will be used
Will I need stitches
What size scar might I expect
Will I need someone to take me home
When can I return to work and normal activities
When and how will I receive the pathology result
Could another procedure be needed after the result

If sedation or general anesthesia is planned, arrange transportation and follow the instructions about eating, drinking, and medications.

How Family Members and Caregivers Can Help

A caregiver can provide practical support without making decisions for the patient.

Helpful support may include providing transportation, listening during instructions, keeping discharge documents organized, helping with meals and household responsibilities, and writing down questions for the results appointment.

It can also help to remember that the biopsy method does not predict the diagnosis. An excisional biopsy does not mean cancer is certain, and an incisional biopsy does not mean the condition is more serious.

A calm response can be enough:

“The sample has been collected. We will understand the next step when the pathology information is available.”

Key Takeaways

An incisional biopsy removes part of an abnormal area
An excisional biopsy removes the entire visible abnormal area
Neither procedure is universally better
The choice depends on size, location, suspected diagnosis, safety, function, and tissue requirements
An excisional biopsy can sometimes provide treatment as well as diagnosis
Complete visible removal does not guarantee that no additional treatment will be needed
Margins are especially important after an excisional biopsy
Recovery depends on the location and depth of the procedure
The biopsy method alone does not indicate whether the result will be benign or malignant

Frequently Asked Questions

Is an Excisional Biopsy More Serious Than an Incisional Biopsy

Not necessarily. An excisional biopsy removes more tissue, but the overall seriousness depends on the location, depth, anesthesia, and nearby structures.

Does an Excisional Biopsy Remove All the Cancer

It removes the entire visible abnormal area, but microscopic cancer cells may remain beyond its edges. Further treatment may be needed depending on the pathology result and margins.

Why Would a Clinician Remove Only Part of a Lump

An incisional biopsy may be safer when a lump is large, deep, or close to an important structure. The diagnosis can then guide treatment planning.

Can an Incisional Biopsy Miss Cancer

Any biopsy can have sampling limitations because only the collected tissue is examined. If the result does not match the clinical or imaging findings, additional sampling may be considered.

Is a Needle Biopsy Better Than a Surgical Biopsy

Needle biopsy is often less invasive and may be the first option. A surgical biopsy may be needed when more tissue is required or when a previous sample was inconclusive.

References

American Cancer Society. How Is a Biopsy Done? Retrieved from https://www.cancer.org/cancer/diagnosis-staging/tests/biopsy-and-cytology-tests/biopsy-types.html
American Cancer Society. Tests for Melanoma Skin Cancer. Retrieved from https://www.cancer.org/cancer/types/melanoma-skin-cancer/detection-diagnosis-staging/how-diagnosed.html
American Cancer Society. Surgical Breast Biopsy. Retrieved from https://www.cancer.org/cancer/types/breast-cancer/screening-tests-and-early-detection/breast-biopsy/surgical-breast-biopsy.html
Guy’s and St Thomas’ NHS Foundation Trust. Recovery After a Skin Biopsy. Retrieved from https://www.guysandstthomas.nhs.uk/health-information/skin-biopsy/recovery-after-skin-biopsy
Johns Hopkins Medicine. Biopsy. Retrieved from https://www.hopkinsmedicine.org/health/treatment-tests-and-therapies/biopsy
National Health Service. Biopsy. Retrieved from https://www.nhs.uk/tests-and-treatments/biopsy/

Medical Disclaimer

This blog provides general educational information about incisional and excisional biopsies. The appropriate procedure, risks, recovery, and treatment implications vary according to the abnormality, body site, and individual health. Follow the instructions provided for your procedure and seek urgent medical help for severe or rapidly worsening symptoms.