Lumps Under the Armpit: When to Seek Medical Advice - Oncology

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When it comes to discovering a lump under the armpit, it is essential to approach the situation with both caution and awareness. The lump you described, measuring about 0.5 cm, soft to the touch, and non-painful, could potentially be a lymph node or another benign condition. However, given your recent family history of breast cancer, it is understandable that you may feel anxious about this finding.

Lumps in the armpit area can arise from various causes, including:
1. Lymphadenopathy: This is the enlargement of lymph nodes, which can occur due to infections, inflammation, or malignancies. In your case, the lump being soft and non-tender might suggest a benign cause, but it is crucial to monitor any changes.

2. Sebaceous Cysts: These are non-cancerous lumps that can form under the skin when sebaceous glands become blocked. They are usually harmless and can feel soft and movable.

3. Lipomas: These are benign tumors made of fat tissue. They are typically soft, painless, and movable under the skin.

4. Infections: Sometimes, infections in the area can lead to swollen lymph nodes or other lumps.
5. Malignancies: While less common, it is essential to consider the possibility of cancer, especially given your family history.
Given that the lump has persisted for over a week without any change, it is advisable to seek medical evaluation. You should consider scheduling an appointment with a healthcare provider, specifically a primary care physician or a specialist in general surgery or oncology. They can perform a physical examination and may recommend imaging studies, such as an ultrasound, to further evaluate the lump. If necessary, they might also perform a biopsy to determine the nature of the lump.

In terms of when to seek medical advice, you should consider the following factors:
- Duration: If the lump persists for more than two weeks without improvement or changes.

- Size: If the lump increases in size or changes in texture.

- Associated Symptoms: If you experience any additional symptoms such as pain, fever, night sweats, or unexplained weight loss.

- Family History: Given your mother's diagnosis of breast cancer, it is prudent to be vigilant about any changes in your breast or armpit area.

In summary, while the lump you described may not be immediately concerning, it is essential to monitor it closely and seek medical advice to rule out any serious conditions. Early detection and intervention are key in managing any potential health issues, especially in the context of a family history of cancer. Please do not hesitate to reach out to a healthcare provider for further evaluation and peace of mind.