Lumps in the Armpit: Causes and When to Seek Help - Oncology

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When a 15-year-old notices a lump in the armpit, it can understandably cause concern. There are several potential causes for lumps in this area, and understanding them can help determine when to seek medical advice.


Common Causes of Lumps in the Armpit
1. Lymphadenopathy: The most common cause of a lump in the armpit is swollen lymph nodes. Lymph nodes can become enlarged due to infections (like a cold or flu), inflammatory conditions, or more serious conditions like lymphoma. In teenagers, infections are often the most likely cause.

2. Cysts: Sebaceous cysts can develop in the armpit area. These are usually benign and can feel like a movable lump under the skin. They can occur due to blocked sebaceous glands.

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

4. Infections: Conditions like abscesses or skin infections can also present as lumps. These may be painful and may be associated with redness or warmth in the area.

5. Skin Conditions: Irritation from shaving or using deodorants can lead to folliculitis or other skin conditions that may cause lumps.


When to Seek Medical Help
Given that the lump is movable and painless, it may not be immediately alarming. However, there are specific signs that warrant a visit to a healthcare provider:
- Persistent Lump: If the lump does not go away after a few weeks.

- Changes in Size or Shape: If the lump grows larger or changes in texture.

- Associated Symptoms: If there are symptoms such as fever, night sweats, unexplained weight loss, or fatigue, these could indicate a more serious condition.

- Pain or Discomfort: If the lump becomes painful or tender.


Diagnostic Approach
When visiting a healthcare provider, they may perform a physical examination and ask about any associated symptoms. Given the patient's history of using a razor and deodorant, the doctor may consider whether irritation or infection could be the cause.
If there is concern about lymphoma or other serious conditions, the doctor may recommend imaging studies, such as an ultrasound, or even a biopsy of the lump to determine its nature.


Conclusion
In summary, while the lump in the armpit could be a benign condition, it is essential to monitor it closely. If there are any concerning changes or associated symptoms, seeking medical advice is crucial. A dermatologist or primary care physician can provide a thorough evaluation and guide the next steps. Given the patient's previous ultrasound results were normal, it is likely that the lump is not serious, but ongoing observation and communication with a healthcare provider are key to ensuring health and peace of mind.