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What's the difference between a boil and a cyst?

Medically reviewed by Susan Bard, MD Boils are painful, pus-filled, and are caused by infections like Staphylococcus ...
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Can an armpit lump be a symptom of breast cancer?

Medically reviewed by Doru Paul, MD Key Takeaways An armpit lump, also called axillary lump, can be a symptom of breast ...