Treatment5 min read

Lymph node removal & lymphedema

Lymph nodes under the arm are checked to see whether cancer has spread. Modern techniques remove as few nodes as possible — and lymphedema can be prevented or managed.

A sentinel node biopsy removes one to three nodes — the first to drain the breast — to check for cancer cells. A full axillary dissection removes more nodes, only when necessary.

About lymphedema

  • Lymph fluid can build up after node removal, causing swelling
  • The risk is lower with a sentinel node biopsy
  • Symptoms: heaviness, tightness or swelling of the arm
  • It can be prevented with exercises and careful skin care
  • Treatment includes compression sleeves and lymphatic massage

Removing lymph nodes is part of staging and treatment, not a punishment. Most women have only minimal, if any, lasting swelling, and physiotherapy helps those who do.

In brief

Sentinel biopsy checks the first 1–3 nodes
Fewer nodes removed = lower lymphedema risk
Lymphedema is manageable when it occurs

What you can do

Learn the prevention routine

Gentle exercise and skin care after surgery protect you.

Report arm changes early

Early lymphedema treatment works best.

Keep learning

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