Objective. To assess the sonographic findings of breast masses in adolescen
ts and the usefulness of sonographic patterns for suggesting a specific dia
gnosis. Methods. The sonograms and medical records of 57 girls (mean age, 1
5.4 years) with palpable breast masses were retrospectively reviewed. Three
observers reviewed the sonograms for multiple sonographic findings. Surger
y or clinical findings established diagnoses. Statistical analysis was done
to determine how well sonographic findings alone and in combination agreed
with final histologic diagnoses. Results. Diagnoses included cysts (n = 12
), abscesses (n = 7), fibroadenomas (n = 36), a lactating adenoma (n = 1),
and a phyllodes tumor (n = 1). The sonographic findings varied significantl
y among lesion types (P less than or equal to .005). Conclusions. Our exper
ience suggests that virtually ail breast masses in a pediatric population a
re benign and that sonography has the ability to differentiate among cystic
, inflammatory, and solid masses.