Armpit Lumps: Causes, Concerns, and When to Seek Help - Surgery

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Axillary lump


Hello Doctor, I had a health check-up last year and found that I had multiple fibroadenomas in my breasts, and I had one removed.
Three months ago, I noticed a small lump in my right armpit that is not visible externally.
It feels more pronounced when my arm is down, and lately, it seems to have increased in size.
It feels about 1 cm, looks the same externally, and is not painful.
Last week, I went to the hospital where I had my previous check-up for a follow-up ultrasound on my breasts and mentioned it to the doctor.
However, the ultrasound results showed no lumps in the armpit, and the doctor advised me to continue regular monitoring.
I will be going abroad for about six months soon, but I still feel a bit worried.
Could you please advise me on what this could possibly be? Thank you.

Miss Jiang, 20~29 year old female. Ask Date: 2016/03/26

Dr. Li Zhonghuai reply Surgery


Hello! Since you will be going abroad for about six months, I suggest you use a marker to circle the small lump.
Please have the doctor perform an ultrasound again at the marked area.
If everything is clear, you can feel reassured.
Changhua Hospital cares about you!

Reply Date: 2016/03/26

More Info


Understanding armpit lumps can be a source of anxiety for many individuals, especially when they have a history of breast conditions such as fibrocystic changes or fibroadenomas. It’s important to approach this topic with a clear understanding of potential causes, concerns, and when to seek medical help.

Firstly, the presence of a lump in the armpit (axillary region) can arise from various conditions. Some common causes include:
1. Lymphadenopathy: This is the enlargement of lymph nodes, which can occur due to infections (like a cold or flu), inflammatory conditions, or malignancies. Lymph nodes can swell in response to infections in the body, including those in the breast or arm.

2. Cysts: These are fluid-filled sacs that can develop in the armpit area. They are usually benign and may not require treatment unless they become painful or infected.

3. Lipomas: These are benign tumors made of fat tissue. They are generally soft, movable, and painless.

4. Fibroadenomas: Given your history of having a fibroadenoma in the breast, it’s worth noting that similar benign growths can occur in the axillary region, although they are less common.

5. Infections: Conditions like hidradenitis suppurativa or abscesses can lead to lumps in the armpit area, often accompanied by pain or redness.

6. Malignancies: While less common, it’s crucial to consider that lumps can sometimes indicate more serious conditions, including breast cancer that has spread to the lymph nodes.

In your case, you mentioned that the lump is approximately 1 cm, is not visible, and does not cause pain. The ultrasound results indicated no significant abnormalities, which is reassuring. However, it’s understandable to feel concerned, especially with the perception that the lump has increased in size.

Here are some considerations regarding your situation:
- Regular Monitoring: Since the ultrasound did not reveal any concerning findings, regular monitoring is advisable. If you notice any changes in size, texture, or if you develop new symptoms (such as pain, redness, or fever), you should seek medical attention promptly.

- Follow-Up: Given that you are traveling for an extended period, it may be beneficial to schedule a follow-up appointment with your healthcare provider before you leave. This way, you can discuss your concerns and possibly get a second opinion or further imaging if necessary.

- Self-Examination: Continue to perform self-examinations of your breast and armpit area. Familiarizing yourself with the normal texture and size of your tissues can help you notice any changes more readily.

- Stress and Anxiety: It’s common to feel anxious about health concerns, especially when traveling. Consider discussing these feelings with a healthcare professional who can provide support or coping strategies.

In conclusion, while the lump in your armpit may not currently indicate a serious condition, it’s essential to remain vigilant and proactive about your health. Regular check-ups, self-examinations, and open communication with your healthcare provider will help ensure that any changes are addressed promptly. If you have any further concerns or if the lump changes in any way, do not hesitate to seek medical advice. Safe travels!

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