What is a Small lump in armpit?

A small lump in the armpit can be caused by various reasons, some of which are more common and some less common.

Here are some potential causes of a small lump in the armpit:

1. Swollen lymph nodes: Lymph nodes are small, bean-shaped structures that are part of the body's immune system. They act as filters, trapping bacteria and other foreign substances. When a person has an infection or inflammation, the lymph nodes in that area may swell up, leading to the formation of a lump. If the lump in your armpit is due to swollen lymph nodes, it is likely to be soft and movable.

2. Cyst: A cyst is a sac filled with fluid or semi-solid material. It can develop anywhere in the body, including the armpit. Armpit cysts are often harmless and non-cancerous, but they can sometimes become painful or cause discomfort.

3. Lipoma: A lipoma is a non-cancerous growth made of fat cells. Lipomas are usually soft, movable, and painless, and they can occur anywhere in the body, including the armpit. They typically grow slowly and do not require treatment unless they become large or painful.

4. Fibroadenoma: Fibroadenomas are benign (non-cancerous) tumors that develop in the breast tissue. They can sometimes occur in the armpit area, especially in women. Fibroadenomas are usually firm, round, and movable, and they don't typically cause pain.

5. Infection: In some cases, a small lump in the armpit may be caused by an infection, such as a boil or an abscess. These types of lumps are usually accompanied by redness, swelling, and tenderness in the affected area.

6. Cancer: In rare cases, a small lump in the armpit may be a sign of cancer. However, cancerous lumps are often accompanied by other symptoms, such as changes in the skin, breast discharge, or persistent pain.

It's important to remember that the specific cause of a small lump in the armpit can only be determined by a healthcare professional. If you notice a new lump in your armpit, it is recommended to consult a doctor or healthcare provider for evaluation and proper diagnosis.