病例资料患者,女,31岁,右侧乳腺无痛性包块13年余。患者13年前发现双侧乳腺大小不等,右侧乳腺较大,下部可触及一包块,无痛,无局部红肿及乳头渗液。哺乳期泌乳正常,肿块无明显变化。查体:双侧乳腺大小不等,右侧乳腺明显增大,下部可触及一较大包括大小约10 cm×8 cm×6 cm,质软, Case information Patients, female, 31 years old, right breast painless mass more than 13 years. 13 years ago, patients found that bilateral breast size range, the larger the right breast, the lower can reach a mass, painless, no local swelling and nipple exudate. Lactation lactation normal, no significant change in the mass. Physical examination: Bilateral breast size range, the right breast increased significantly, the lower can reach a larger, including the size of about 10 cm × 8 cm × 6 cm, soft,