OBJECTIVE: The purpose of this presentation is to show the sonographic findings of breast masses, which can occur in subcutaneous fat or in the cutaneous layer of the breast. METHODS: We reviewed the sonographic findings of superficial breast masses, including the epidermal inclusion cyst, steatocystoma multiplex, fat necrosis, accessory breast, Mondor disease, sparganosis, neurofibroma, tuberculosis, mastitis, and breast malignancy. RESULTS: Specific sonographic features of superficial breast masses have been illustrated. CONCLUSIONS: Radiologists must be familiar with the sonographic findings of various diseases involving the superficial layer of the breast to avoid further patient workup.