Purpose : Tubular adenoma (TA) is known as a rare lesion of the breast which is difficult to diagnosispreoperatively because of its rarity and similarity to fibroadenoma. Hence, our purpose is to suggest thecharacteristic sonographic features for its correct diagnosis. Materials and Methods : We retrospectively analyzedthe clinical data and mammographic and sonographic findings. of seven patients(mean age, 23) who during theprevious five years had presented at our hospital with pathologically-proven tubular adenomas. Results : TA wasmisdiagnosed as fibroadenoma, since on physical examination of these young females, the lesions presented apalpable, non-tender mass. Mammographically, they showed a well defined mass similar to fibroadenoma. however,Sonographic findings were characteristic of TA and compared to fibroadenoma, showed a well demarcated and smoothbordered mass with transverse long axis, posterior enhancement and homogeneous lower internal echogenecity. Nocase showed lateral wall refractive shadowing. Conclusion : In young females, the clinical and mammographicfindings of TA are similar to those of fibroadenoma. However, sonographic findings of TA can, be helpful in thedifferential diagnosis of this entity and fibroadenoma.