Andrew M. Kaunitz, MD: Several weeks ago, I saw a new patient, a woman in her early 50s who reported "swelling in my armpit." In the past week, she had noted that tissue in the upper outer quadrant of ...

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

When my twin sister got the first dose of the Pfizer-BioNTech COVID-19 vaccine at the end of December, she kept noting that her armpit felt swollen. It was similar to the soreness experienced with an ...

Armpit pain is a common complaint that can have many causes, from mild muscle injuries to swollen lymph nodes and severe skin infections. In most cases, armpit pain isn't a reason to worry, but it can ...

One of the potential side effects of the Covid-19 vaccine is axillary lymphadenopathy. (Photo by Daniel Garzon Herazo/NurPhoto via Getty Images) There’s a potential side effect with the Covid-19 ...

A multicentre study led from Finland has shown that lymph node transfer is a viable treatment for the swelling in the affected limb, a condition known as lymphedema, after breast cancer surgery.