a Hard Lump in the Armpit: Tumor, Folliculitis, or Lymphadenopathy? - Oncology

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There is a hard lump in the armpit?


Hello doctor, I have had swelling in both armpits for several months.
Recently, the swelling on the right side has decreased, but today while showering, I felt a small hard lump (about one centimeter) in my left armpit.
It is not very noticeable from the front, but it is quite prominent from the side.
I do not feel anything during normal activities, and it is not painful.
When I touch it, it feels movable, but there is slight tenderness when I press on it, and there are no noticeable changes in color.
I would like to ask: which is more likely, a tumor, folliculitis, or lymphadenopathy? Can I leave it alone? If the possibility of a tumor is high, should I see a breast surgeon or an oncologist? Thank you for your response.

Haibao, 10~19 year old female. Ask Date: 2022/07/14

Dr. Chen Sirong reply Oncology


Seal / 19 years old / Female
1.
Which is more likely: a tumor, folliculitis, or lymphadenopathy?
A: Accessory breast tissue and the other three conditions you mentioned are all possibilities.
2.
Can it be left untreated?
A:
2.1 Based on what you described, the likelihood of it being benign is greater.

2.2 Considering your age, it is also not within the typical age range for malignant conditions.

2.2.1 In Taiwan, the age of women diagnosed with breast cancer is gradually decreasing, which scholars believe is significantly related to dietary habits.
The typical age range for breast cancer in Taiwan is between 35 and 50 years, while in other countries, it is approximately 55 to 70 years.

2.2.2 Of course, there have been cases of breast cancer in Taiwan as young as 8 years old.

2.3 It is difficult for a doctor to advise you to leave it untreated without a thorough examination, including inspection, auscultation, palpation, and inquiry.

2.4 It is advisable to see a doctor nearby.
If the physician assesses that it can be left untreated after examination, then it can be monitored, but "leaving it untreated" means it can only be monitored if there are no changes; if there are any changes, you should see a doctor again.
3.
If the possibility of a tumor is high, should I see a breast surgeon or an oncologist?
A: It is better to see a breast surgeon.
Wishing you peace and joy, Taoyuan Hospital, Dr.
Chen Si-Rong.

Reply Date: 2022/07/14

More Info


When it comes to a hard lump in the armpit, there are several potential causes, including tumors, folliculitis, and lymphadenopathy. Each of these conditions has distinct characteristics, and understanding these can help in determining the appropriate course of action.

1. Tumors: A tumor in the armpit can be benign (non-cancerous) or malignant (cancerous). The characteristics of the lump, such as its size, texture, mobility, and any associated symptoms (like pain or changes in skin color), can provide clues. A hard, immobile lump that is painless may raise suspicion for a malignant tumor, while a movable, soft lump is more likely to be benign. However, the absence of pain does not rule out malignancy.

2. Folliculitis: This is an inflammation of the hair follicles, often caused by bacterial infection. It typically presents as small, red bumps or pustules around hair follicles, which can be tender to the touch. If the lump you are feeling is associated with hair follicles and shows signs of redness or pus, it could be folliculitis. This condition is usually self-limiting and can often be treated with topical antibiotics or antiseptics.

3. Lymphadenopathy: Swollen lymph nodes can occur due to infections, inflammation, or malignancy. Lymph nodes are typically mobile and may be tender when pressed. If the lump you are feeling is soft, movable, and associated with other symptoms like fever or recent infections, it may be lymphadenopathy. In the context of recent swelling in both armpits, this could be a response to an infection or systemic condition.

Given that you have noticed a hard lump that is about one centimeter in size, movable, and slightly tender upon pressure, it is essential to consider the following steps:
- Observation: If the lump is not causing significant discomfort and there are no other concerning symptoms (like fever, weight loss, or night sweats), you may choose to monitor it for changes over a few weeks. However, any persistent lump should be evaluated by a healthcare professional.

- Consultation: If you are concerned about the possibility of a tumor, it is advisable to consult a specialist. A breast surgeon (or a general surgeon) would be appropriate for evaluating a lump in the armpit, especially if there is a suspicion of a breast-related issue or a tumor. If there are signs of systemic involvement or if the lump is suspected to be lymphadenopathy, an oncologist may also be involved in the evaluation.

- Diagnostic Imaging: Depending on the initial examination, your doctor may recommend imaging studies, such as an ultrasound or mammogram, to better characterize the lump and assess for any additional abnormalities.

- Biopsy: If there is a significant concern regarding the nature of the lump, a biopsy may be necessary to obtain a definitive diagnosis. This can be done through fine needle aspiration or excisional biopsy, depending on the size and characteristics of the lump.

In summary, while the lump you are experiencing could potentially be a benign condition, it is essential to seek medical advice for a thorough evaluation. Early diagnosis and management are crucial, especially if there is any suspicion of malignancy. Monitoring the lump and consulting with a healthcare provider will help ensure that any necessary interventions are timely and appropriate.

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