Fibrocystic breasts are common. The incidence peaks at 400 per 100,000 woman-years at the age of 40 to 44. The condition can cause  pain and tenderness that fluctuate with the menstrual cycle. And there is a higher prevalence of cysts as women approach the menopause. In this BMJ Best Practice podcast, Kieran Walsh talks with Professor Ingrid Lizarraga, Clinical Associate Professor at the Division of Surgical Oncology and Endocrine Surgery, University of Iowa Hospitals and Clinics. Competing interests: None For more on fibrocystic breasts, visit BMJ Best Practice.