Lumps Under the Armpit: When to See a Specialist - Oncology

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There is a hard lump in the armpit?


Hello, I noticed a hard lump in my armpit about two to three weeks ago.
It looks a bit red and feels slightly swollen; it hurts when I press on it.
A few days ago, I felt a slight sharp pain when I touched my chest.
The size is approximately 1 cm.
Which specialty should I see for this?

J, 10~19 year old female. Ask Date: 2020/10/31

Dr. Hu Ziren reply Oncology


It may just be folliculitis; you can consult a gynecologist.

Reply Date: 2020/10/31

More Info


When it comes to lumps under the armpit, it’s essential to approach the situation with caution and awareness of the potential underlying causes. The symptoms you describe—a hard lump that is red, slightly swollen, and painful to the touch—can be indicative of several conditions, some of which may require medical attention.

Firstly, it’s important to understand that lumps in the armpit area can arise from various sources. Common causes include:
1. Lymphadenopathy: This is the swelling of lymph nodes, which can occur due to infections (like a cold or flu), inflammatory conditions, or more serious issues such as malignancies. The lymph nodes in the armpit can become enlarged in response to infections in the upper body, including the arms, chest, or even the breast.

2. Infections: Skin infections, such as abscesses or folliculitis, can also lead to painful lumps. These infections can cause localized redness, swelling, and tenderness.

3. Cysts: Sebaceous cysts or other types of cysts can form in the armpit area. These are usually benign but can become inflamed or infected, leading to discomfort.

4. Lipomas: These are benign tumors made of fat tissue. They are usually soft and movable but can sometimes become tender if they press against surrounding tissues.

5. Breast-related issues: In some cases, lumps in the armpit can be related to breast conditions, including infections or tumors.
Given the symptoms you’ve described—particularly the pain and the redness—it’s advisable to seek medical attention. The best course of action would be to consult a healthcare provider who specializes in this area. Here are some recommendations on which specialists to see:
- Primary Care Physician (PCP): Your first step could be to visit your primary care doctor. They can perform a physical examination, take a detailed medical history, and determine if further evaluation is necessary.

- Dermatologist: If the lump appears to be related to a skin condition, a dermatologist can provide specialized care. They can assess for infections, cysts, or other dermatological issues.

- General Surgeon: If the lump is suspected to be a cyst or a lipoma that may require removal, a general surgeon can evaluate and perform any necessary procedures.

- Oncologist: If there is a concern about malignancy, your doctor may refer you to an oncologist for further evaluation and management.

In terms of what to expect during your visit, the healthcare provider will likely perform a physical examination of the lump and may order imaging studies, such as an ultrasound, to get a better understanding of the lump's characteristics. Blood tests may also be conducted to check for signs of infection or other underlying conditions.

It’s essential to monitor any changes in the lump, such as an increase in size, changes in color, or the development of new symptoms like fever or systemic signs of illness. If you experience any of these changes, seek medical attention promptly.

In conclusion, while many lumps under the armpit can be benign and self-limiting, your symptoms warrant a professional evaluation to rule out any serious conditions. Don’t hesitate to reach out to a healthcare provider for a thorough assessment and appropriate management. Your health is paramount, and early intervention can often lead to better outcomes.

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