Results The main ultrasound findings of DCIS could be divided into the dilated duct type, the nodule with calcification type and the mass type which included mix-mass type and solid-mass type.

• 结果乳腺导管内癌在超声上主要表现为导管型、结节伴钙化型及肿块型（包括混合性肿块及实质性肿块）。