Hello, I'm a healthcare professional with a background in medical research and patient care. I'm here to provide you with accurate and helpful information regarding your concerns.
It's important to note that a painful lump in the armpit can be caused by a variety of conditions, and while it's not necessarily indicative of cancer, it's crucial to consider all possibilities and seek professional medical advice for a proper diagnosis. Let's explore some of the potential causes for a painful lump in the armpit:


1. Lymphadenopathy: This is the medical term for swollen lymph nodes, which can be caused by an infection or inflammation in the body. Lymph nodes in the armpit can become enlarged and tender due to bacterial or viral infections, such as a sore throat or the flu.


2. Infection: An infection in the skin or tissues near the armpit can lead to the development of a painful lump. This could be due to bacteria or other microorganisms that have entered the body through a cut, insect bite, or other means.


3. Cysts: A cyst is a closed sac-like structure filled with fluid or semi-solid material. They can form in various parts of the body and may feel soft to the touch. However, it's important to differentiate between a cyst and other types of lumps, as the texture and mobility can vary.


4. Fatty Growths: These benign growths are typically soft and can be easily moved. They are not cancerous and are usually harmless, but they can sometimes be uncomfortable or cause aesthetic concerns.


5. Fibroadenomas: These are non-cancerous (benign) breast lumps that can sometimes be felt in the armpit area. They are more common in women and can feel hard and may not move much when touched.


6. Cancerous Tumors: While it's less common, a painful lump in the armpit could be a sign of cancer. Cancerous tumors can feel hard and immobile. They may also grow in size over time and can be associated with other symptoms such as unexplained weight loss, fatigue, or changes in skin appearance.

It's important to remember that not all lumps are cancerous, and many are benign (non-cancerous). However, it's always a good idea to have any new or changing lump evaluated by a healthcare professional. They can perform a physical examination and may order additional tests such as an ultrasound, CT scan, or a biopsy to determine the nature of the lump.

In conclusion, while a painful lump in the armpit can be a symptom of various conditions, it's essential to seek medical attention to rule out any serious conditions, including cancer. A healthcare provider will be able to provide a definitive diagnosis and recommend appropriate treatment options.

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For example, a cyst, infection or fatty growth may feel soft to the touch. However, fibroadenomas and cancerous tumors may feel hard and immobile. Some people may experience pain with an armpit lump. ... Lymph node infections may also cause painful lumps in the armpit.Apr 21, 2017read more >>