Lumps in the shoulder area are not uncommon. While most are harmless, some can be a sign of a more serious health issue brewing beneath the skin. “If you notice any new lump on your shoulder, you ...

Medically reviewed by Doru Paul, MD Key Takeaways An armpit lump, also called axillary lump, can be a symptom of breast cancer.A healthcare provider should check any hard armpit lump that doesn't ...