TORONTO, Ontario (CTV News) — As more Canadians receive COVID-19 vaccines, more and more people might encounter a side-effect that radiologists want the public to be more aware of — swelling under the ...

A lump started growing under my armpit, and it was noticable enough for my mom to say something. My doctor dismissed me twice, saying it was just a swollen lymph node. I'm glad I listened to my mom, ...

SAN FRANCISCO (KPIX 5) – In a growing number of women, a COVID-19 vaccine is causing some to think they may have breast cancer. But top doctors in the Bay Area say it may actually be a side effect of ...

Right-sided pain under the armpit may be due to muscle strain, infections, or skin conditions. Sometimes, armpit pain may indicate a more serious issue, such as cancer or a heart issue. The armpit ...

The armpit is a complex junction where muscles, nerves, blood vessels, and lymph nodes meet. Because it is such a busy area of the body, experiencing pain there is surprisingly common. For some, it is ...