Why Is Lymph Node Dissection Performed?
Lymph node dissection is a surgical procedure in which one or more lymph nodes are removed and examined. Lymph nodes are small, bean-shaped structures that are part of the lymphatic system, which helps the body fight infection and drain fluids. In cancer care, doctors often check lymph nodes to see if cancer has spread beyond the original tumor. Removing lymph nodes can help doctors stage cancer, guide treatment decisions, and sometimes improve outcomes.
This procedure is commonly done for cancers such as breast cancer, melanoma, head and neck cancer, and others, where the likelihood of lymphatic spread is higher. Lymph node dissection may be done at the same time as the main tumor removal or separately. The extent of dissection, from a few nodes to entire nodal regions, depends on the type and stage of disease.
Purpose & Benefits of Lymph Node Dissection
● Determines if cancer has spread to lymph nodes near the tumor.
● Helps stage cancer, which guides the choice of further treatments such as chemotherapy or radiation.
● Removes possible cancer-containing lymph nodes to reduce the risk of further spread.
● Provides accurate information for prognosis and treatment planning.
● Improves survival chances in some cancers when combined with other therapies.
● May help reduce local recurrence by clearing nodes near the primary tumor.
Who May Need Lymph Node Dissection?
Lymph node dissection may be recommended for people with:
● Cancer types frequently involve lymphatic spread, such as breast cancer, melanoma, and some gynecologic cancers.
● Positive lymph node findings on imaging tests or sentinel node biopsy.
● Suspicious or enlarged lymph nodes found during examination or scans.
● A need for accurate cancer staging to select further therapy.
● Situations where removing nearby nodes may improve local control of disease.
Your surgeon considers overall health, type of cancer, imaging results, and biopsy findings before recommending the procedure.
Types of Lymph Node Dissection
1.Sentinel Lymph Node Biopsy
In this less invasive approach, the first lymph node(s) that cancer would likely spread to, called sentinel nodes, are identified and removed. If these nodes are free of cancer, more extensive removal may not be needed.
2.Regional Lymph Node Dissection
In a regional dissection, multiple lymph nodes in an area (such as under the arm for breast cancer) are removed. The extent varies from level I to level III based on anatomical location.
3.Modified Lymph Node Dissection
Sometimes, surgeons remove many but not all nodes in a region to balance effectiveness and reduce complications. This approach may be used when full dissection carries higher risks.
Lymph Node Dissection Procedure: Step-by-Step
1. Preoperative Evaluation:
Before surgery, doctors review medical history, imaging studies (like MRI, CT, or PET scans), and biopsy results. Lab tests are done to assess overall health.
2. Anesthesia:
The procedure is performed under general anesthesia, meaning you are asleep and comfortable during surgery.
3. Incision and Access:
The surgeon makes an incision in the area where lymph nodes are to be removed (for example, in the armpit for breast cancer).
4. Identification and Removal:
- For sentinel node biopsy, a special dye or tracer is used to locate the first draining lymph nodes.
- For regional dissection, the surgeon carefully removes the targeted lymph node groups while protecting nearby nerves and vessels.
5. Closure:
Once the required nodes are removed, the wound is closed with sutures, and a sterile dressing is applied.
6. Pathological Examination:
The removed lymph nodes are sent to a laboratory where a pathologist examines them under a microscope to check for cancer cells.
The length of surgery varies depending on the number of nodes removed and complexity but typically ranges from 1 to several hours based on the site and disease.
Recovery & Aftercare
After lymph node dissection:
● Hospital Stay: Many patients stay in the hospital for a day or more for monitoring and pain control.
● Wound Care: Keep the site clean and dry until the surgeon removes stitches or staples. Follow instructions on dressing changes and bathing.
● Activity: Light activity is encouraged early, but heavy lifting and strenuous exercise are usually avoided for a few weeks.
● Physical Therapy: Gentle exercises or referral to a physiotherapist may help maintain range of motion and reduce stiffness, especially after axillary (underarm) dissection.
● Follow-Up: Regular visits help check wound healing and discuss pathology results, further therapy options (like chemotherapy or radiation), and long-term care.
Most people recover steadily over several weeks, though full recovery and return to normal activity depend on the extent of surgery and overall health.
Risks & Possible Complications
Like all surgeries, lymph node dissection carries potential risks:
● Infection at the incision site.
● Bleeding or hematoma (blood collection under the skin).
● Seroma, a fluid pocket that may form near the wound and require drainage.
● Lymphoedema (swelling) due to changes in lymph drainage, especially after axillary dissection.
● Nerve injury causing numbness, tingling, or weakness near the surgery site.
● Delayed wound healing in some individuals.
Your surgical team will discuss risk factors based on your personal history and explain how they aim to reduce complications.
Lymph Node Dissection vs Other Procedures
● Sentinel Node Biopsy vs Full Dissection:
Sentinel biopsy examines only the first draining nodes and may avoid larger surgery if these are negative. Full lymph node dissection removes a larger group of nodes when spread is more likely.
● Dissection vs Imaging Alone:
Imaging (MRI, CT) can suggest lymph node involvement but cannot replace pathological examination of removed nodes to confirm cancer spread.
● Dissection vs Biopsy Only:
A biopsy takes a small sample of a node, while dissection removes a group of nodes for full evaluation and staging.
Doctors choose the right approach based on cancer type, stage, overall health, and treatment goals.
Dr. Annu Priya
MD-DERMATOLOGIST
Dermatology
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DermatologyDr. Annu Priya is a leading Dermatologist and Hair Transplant Specialist in Bhopal, with over 10 years of clinical experience in treating a wide range of skin, hair, and aesthetic concerns. Known for her patient-focused and ethical approach, she combines medical expertise with an artistic eye to deliver natural and long-lasting results. Dr. Annu Priya pursued an advanced Fellowship in Hair Transplantation, gaining proficiency in both FUE (Follicular Unit Extraction) and FUT (Follicular Unit Transplantation) techniques. She also underwent specialized training in Botulinum Toxin (Botox) and Dermal Fillers, enabling her to perform refined facial rejuvenaion and anti-aging procedures.
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