The author describes his life with Poland syndrome.
The syndrome — named for the surgeon Alfred Poland — usually involves a rare birth defect, an underdeveloped or missing pectoral muscle. It occurs in males more than twice as often as in females and affects the right muscle about 75 percent of the time. Some estimates place the frequency around one in 100,000 births.
This is an interesting illness narrative that appeared in the NY Times, June 2018: Not So Bad Birth Defect.