At what age is a Fibroadenoma breast mass most commonly found?

Fibroadenomas are benign breast tumors that are most commonly found in women during their 20s. This age group is particularly significant because the hormonal changes and reproductive factors influencing breast tissue development often peak during this time. Although fibroadenomas can occur at any age, their prevalence is highest among younger women, making the 20s the typical age range for diagnosis.

In contrast, while teens may also experience these masses, the incidence is considerably lower than in the 20s. As women age into their 30s and 40s, the likelihood of developing fibroadenomas decreases, and they are generally replaced by other types of breast conditions or lesions. Thus, the association of fibroadenomas with the 20s helps clarify why this age group is the most commonly affected.