Cysts (fluid-filled tissue pockets), infections, and swollen lymph nodes commonly cause armpit lumps. You may see a ...

An armpit lump—or axillary lump—can occur as a symptom of many conditions that range from harmless to serious. It is often ...

Swollen lymph nodes in the armpit may indicate an infection, injury, or disease that requires medical attention. However, it’s usually not a sign of cancer. Lymph nodes are critical parts of the ...