Today at the Library of Congress I spent quite a bit of time reading the teenage diaries of Wanda Landowska. Around age 15, she developed a serious ganglion in her right wrist and had to have years of treatments for it, including a couple of surgeries. She was devastated by this and was worried sick that it would keep her from becoming a pianist (which, originally she wanted to be.) As a result, she actually majored in composition at the Hochschule in Berlin! Today I saw dozens of her compositions as well as lots of medical information.
Ganglions are still a serious occupational hazard of pianists!