Axillary Lumps: Causes and When to Seek Treatment - Breast and Thyroid

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Axillary lumps, or lumps in the armpit area, can arise from various causes, and understanding these causes is crucial for determining when to seek treatment. In your case, the lump you mentioned may be related to several potential conditions, including lymphadenopathy, benign tumors, or even accessory breast tissue (supernumerary breast tissue).
Lymphadenopathy, or swollen lymph nodes, is one of the most common causes of axillary lumps. This can occur due to infections (such as bacterial or viral infections), inflammatory conditions, or malignancies. Infections can lead to localized swelling as the body responds to the pathogens. If the lump is tender, warm, or associated with systemic symptoms like fever, it may indicate an infection that requires medical attention.

Another possibility is the presence of benign tumors, such as lipomas or cysts. These are generally non-cancerous and may not require treatment unless they cause discomfort or cosmetic concerns. Accessory breast tissue, which can develop in some individuals, may also present as a lump in the axillary region. This tissue can sometimes become prominent during hormonal changes, such as puberty or pregnancy.

Regarding your specific situation, it is indeed possible for accessory breast tissue to develop later in life, even if previous examinations did not reveal it. Hormonal fluctuations or other factors could contribute to the emergence of such tissue.
As for whether you should undergo excision for biopsy, this decision typically depends on several factors, including the size of the lump, its characteristics (such as whether it is hard or soft, tender or painless), and any associated symptoms. If the lump is growing, changing, or accompanied by other concerning symptoms (such as unexplained weight loss or night sweats), it is advisable to consult a healthcare provider for further evaluation. A biopsy may be warranted to rule out malignancy, especially if there is any suspicion based on the clinical examination or imaging studies.

In general, if you notice any new lumps or changes in existing lumps, it is wise to seek medical advice. A healthcare professional can perform a thorough examination, possibly including imaging studies like ultrasound or mammography, to assess the lump's nature. If there is any concern about the possibility of cancer, a biopsy may be the best course of action to obtain a definitive diagnosis.

In summary, while many axillary lumps are benign and may not require treatment, it is essential to monitor any changes and consult a healthcare provider for a proper assessment. Early evaluation can help ensure that any serious conditions are identified and managed appropriately. If you have any further questions or concerns, do not hesitate to reach out to your healthcare provider for personalized advice and guidance.