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Armpit lump



Female Breast
Female Breast
Lymphatic system
Lymphatic system
Swollen lymph nodes under arm
Swollen lymph nodes under arm


Armpit lump

Alternative Names:

Lump in the armpit; Localized lymphadenopathy - armpit; Axillary lymphadenopathy; Axillary lymphs enlarged; Lymph nodes enlarged-axillary; Axillary abscess


Home Care:

Check with your health care provider to determine the nature of the lump.

For a lump in the armpit caused by an infected, painful gland, follow the instructions about the proper treatment for the underlying infection.



A lump in the armpit caused by a generalized viral infection will eventually disappear without treatment. A lump in the armpit caused by an allergic reaction will go away after the"trigger" is removed. No treatment is necessary for a lump in the armpit caused by normal breast tissue. Usually, no treatment is necessary for a cyst.

A lump in the armpit caused by a lipoma is harmless, unless it grows so large that it causes discomfort.

For a lump in the armpit caused by a malignancy, follow the appropriate cancer treatment recommended by a doctor.


Call your health care provider if:

Call if you have any unexplained armpit lumps. Do not try to diagnose lumps without professional help.


What to expect at your health care provider's office:

Your doctor will perform a physical examination and ask medical history questions about the armpit lump, such as:

  • When did you first notice the lump?
  • Is it getting better, worse, or staying the same?
  • Are you breast-feeding?
  • Have you noticed any factors that make it worse?
  • What other symptoms are also present?
  • Is the lump painful?

The physical examination may include palpation -- gently pressing the nodes with the fingertips.

Testing depends on what is found during the physical examination. Diagnostic tests that may be performed include:



A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).


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