Lumps in the Armpit: When to Seek Medical Advice - Surgery

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Palpable lump in the axilla?


Hello, Doctor.
A few days ago, before my period, I noticed a movable lump about 1 cm in size under my right armpit (near the axillary breast tissue) while taking a shower.
It causes slight pain when pressed firmly, but I don't feel it otherwise, and I haven't had anything like this before.
I usually experience breast tenderness, acne, and lower back pain before my period.
I would like to ask if it is advisable to observe this symptom for a while before going to the hospital for an examination? (I am hesitant to visit the hospital due to the recent surge in COVID-19 cases, but I am also worried it might be a malignant tumor.) I would appreciate your advice.
Thank you very much.

Huan Huan, 20~29 year old female. Ask Date: 2021/05/24

Dr. Yu Mingchang reply Surgery


Hello: Please take a moment to check the surgical outpatient clinic.

Reply Date: 2021/05/24

More Info


When it comes to discovering a lump in the armpit, especially one that is movable and about 1 cm in size, it is important to approach the situation with caution and awareness. The presence of a lump can be concerning, but it is essential to consider various factors before deciding on the next steps.

Firstly, the characteristics of the lump you described—movable, small, and associated with mild pain upon pressure—are often indicative of benign conditions. Common benign causes of lumps in the armpit include lymph nodes that may become reactive due to infections, hormonal changes, or other non-cancerous conditions. In your case, since you mentioned that you experience breast tenderness and other symptoms related to your menstrual cycle, it is possible that the lump could be related to hormonal fluctuations. Hormonal changes can lead to swelling of lymph nodes or breast tissue, which may explain the lump's presence.

However, it is crucial to monitor the lump closely. Here are some guidelines on when to seek medical advice:
1. Duration: If the lump persists for more than two weeks without any signs of improvement, it is advisable to consult a healthcare professional. Persistent lumps warrant further evaluation to rule out any underlying issues.

2. Changes in Size or Shape: If you notice that the lump increases in size, changes in shape, or becomes harder, it is essential to seek medical attention. These changes could indicate a need for further investigation.

3. Associated Symptoms: Pay attention to any additional symptoms that may arise, such as fever, night sweats, unexplained weight loss, or changes in your overall health. These symptoms could suggest a more serious condition that requires prompt evaluation.

4. Pain: While mild pain can be a normal response, if the pain becomes severe or is accompanied by other concerning symptoms, it is important to seek medical advice.

5. Family History: If you have a family history of breast cancer or other malignancies, it may be prudent to consult a healthcare provider sooner rather than later.

Given the current pandemic situation, it is understandable to be hesitant about visiting a healthcare facility. However, many healthcare providers have implemented safety measures to minimize the risk of exposure to COVID-19. Telehealth consultations are also an option, allowing you to discuss your concerns with a healthcare professional from the comfort of your home.

In conclusion, while it may be reasonable to observe the lump for a short period, it is essential to remain vigilant and seek medical advice if any concerning changes occur. Early evaluation can provide peace of mind and ensure that any potential issues are addressed promptly. Remember, it is always better to err on the side of caution when it comes to your health. If you have any doubts or concerns, do not hesitate to reach out to a healthcare provider for guidance.

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