PURPOSE: To investigate imaging findings in @entity1 with @entity0 ( @entity0 ). MATERIALS AND METHODS: A retrospective search in the databases of 10 radiological departments in Germany from 2000 to 2011 was performed. Only histologically proven cases of @entity0 were included into the study. Mammography was available in 31 @entity1 (33 lesions), ultrasound images in 24 @entity1 (24 lesions), and for 10 @entity1 (14 lesions) magnetic resonance imaging (MRI) of the breast was performed. The breast findings were classified according to the American College of Radiology Breast Imaging Reporting and Data Systems (BI-RADS) 5th edition categories. Collected data were evaluated by means of descriptive statistics. RESULTS: Forty-two female @entity1 (mean age 62.0 years, range, 30-86 years) were included in the study. Clinically, all @entity1 had painless lumps. Irregular (53.3% [16/30]) or oval (30.0% [9/30]) mass with indistinct (73.3% [22/30]) or microlobulated (10% [3/30]) margins were common findings on mammograms. Ultrasound revealed typically an irregular (79.2% [19/24]), hypoechoic (62.5% [15/24]) mass, with indistinct margins (79.2% [19/24]), and posterior acoustic shadowing (79.2% [19/24]). MRI showed irregular masses (81.8% [9/11]) with irregular or spiculated margins, and a rapid initial signal increase with a delayed washout in kinetic analysis. CONCLUSION: Overall, @entity0 has no pathognomonic imaging features and can mimic those of invasive @entity189 . @entity0 should be taken into the differential diagnosis of breast findings described above.

Imaging findings of XXXX : Results of a first multicenter study.

@entity1 :: ('9606', 'Species') :: ['women', 'patients'] @entity189 :: ('MESH:D002277', 'Disease') :: ['mammary carcinoma'] @entity0 :: ('MESH:D001943', 'Disease') :: ['primary breast sarcoma', 'Breast sarcoma', 'PBS']
@entity0 :: (MESH:D001943,Disease) :: ['primary breast sarcoma']
