Posted on February 19, 2014
One of the largest studies conducted to date pooled data from studies of about 2,400 men with breast cancer and 52,000 men without breast cancer and confirmed that risk factors for male breast cancer include obesity, a rare genetic condition called Klinefelter syndrome, and gynecomastia (excess breast tissue). These results appeared February 19, 2014 in the Journal of National Cancer Institute. Read the full NCI News Note on the study.
Reference: Brinton LA, Cook MB, McCormack V, et al. Anthropometric and hormonal risk factors for male breast cancer: Male breast cancer pooling project results. J Natl Cancer Inst 2014;106:djt465